Growth and Development Practice Questions

Q: You are examining an infant and the findings are as follows: Adductor angle - 100°, Popliteal angle - 90°, Dorsiflexion angle of foot - 70°, Scarf sign - Elbow crosses the middle but doesn't reach the anterior axillary line. What is the appropriate age of the infant?

4 - 6 months. This question tests the clinical assessment of muscle tone using the **Amiel-Tison and Grenier method**, which evaluates the maturation of passive tone in infants. Passive tone follows a predictable **caudo-cephalic** progression (bottom-to-top) and decreases as the infant grows. ### **Explanation of the Correct Answer (B)** The findings provided are characteristic of an infant aged **4 to 6 months**: * **Adductor Angle:** Increases from 40°–70° at birth to **70°–110°** by 4–6 months. * **Popliteal Angle:** Increases from 80°–90° at birth to **90°–120°** by 4–6 months. * **Dorsiflexion Angle:** Increases from 0°–20° at birth to **60°–70°** by 4–6 months (as physiological hypertonia of the flexors wanes). * **Scarf Sign:** In newborns, the elbow does not reach the midline. By 4–6 months, the elbow **crosses the midline** but does not reach the opposite axillary line. ### **Why Other Options are Incorrect** * **A (0–3 months):** Angles are much smaller due to physiological hypertonia. The Scarf sign would show the elbow not reaching the midline, and the popliteal angle would be <90°. * **C & D (7–12 months):** By this age, passive tone is significantly more relaxed. The adductor angle would be 130°–150°, the popliteal angle 150°–170°, and the Scarf sign would show the elbow reaching the opposite axillary line. ### **High-Yield Clinical Pearls for NEET-PG** 1. **Passive Tone Progression:** Tone decreases in a **caudo-cephalic** direction (legs relax before arms). 2. **Active Tone Progression:** Development of motor milestones (head control, sitting) follows a **cephalo-caudal** direction. 3. **The Scarf Sign:** A classic indicator of shoulder girdle tone. If a term newborn's elbow easily crosses the midline, it suggests **hypotonia**. 4. **Square Window:** The angle of the wrist. It is 0° in term neonates but increases with age, unlike the other angles mentioned above.

Q: Tears are produced in the newborn after which period?

1 week. **Explanation:** The correct answer is **1 week (Option A)**. **Medical Concept:** At birth, the lacrimal glands are anatomically present but are not yet fully functional. While newborns produce enough basal tears to keep the cornea moist, they do not produce "emotional" or reflex tears when crying. The autonomic nervous system stimulation required for active tear production typically matures shortly after birth. In most healthy neonates, visible tears begin to appear during crying between **1 to 4 weeks** of age, with **1 week** being the earliest recognized milestone for this development in standard pediatric literature. **Analysis of Options:** * **Option A (1 week):** This is the clinically accepted earliest timeframe for the onset of tear production during crying. * **Options B, C, and D (2, 3, and 4 weeks):** While some infants may take up to a month to produce tears, these options are considered delayed relative to the initial physiological onset at 1 week. For competitive exams like NEET-PG, the earliest standard milestone is preferred. **High-Yield Clinical Pearls for NEET-PG:** * **Nasolacrimal Duct (NLD) Patency:** The NLD usually becomes patent at birth or shortly after. If it remains blocked, it leads to **Congenital Nasolacrimal Duct Obstruction (Dacryostenosis)**, presenting with persistent watering (epiphora) and matting of eyelashes. * **Management:** 90% of NLD obstructions resolve spontaneously by 1 year. The initial treatment is **Crigler’s massage** (lacrimal sac massage). * **Visual Milestones:** * **Birth:** Fixes on mother's face. * **6–8 weeks:** Social smile. * **3 months:** Binocular vision and ocular tracking (180 degrees).

Q: Which of the following is true about Down's syndrome?

Simian crease. **Explanation:** Down’s Syndrome (Trisomy 21) is the most common chromosomal anomaly. The correct answer is **Simian crease** (a single transverse palmar crease), which is a classic dermatoglyphic finding seen in approximately 45-50% of patients. **Analysis of Options:** * **Simian Crease (Correct):** This is a high-yield physical marker. While not pathognomonic (it can occur in 5-10% of the normal population), it is strongly associated with Trisomy 21 alongside other hand findings like **clinodactyly** (incurving of the 5th finger) and **brachydactyly**. * **Hypotonia:** While generalized hypotonia is a very common feature of Down’s syndrome (especially in the neonatal period), the question structure often seeks the most specific physical sign. However, in many clinical contexts, hypotonia is considered a "soft" sign. * **Lymphedema:** This is a classic feature of **Turner Syndrome (45, XO)**, typically presenting as non-pitting edema of the hands and feet in neonates. It is not a characteristic feature of Down’s syndrome. * **All of the Above:** Since lymphedema is specific to Turner syndrome, this option is incorrect. **NEET-PG High-Yield Pearls:** 1. **Most common cardiac defect:** Endocardial Cushion Defect (AVSD); however, **VSD** is the most common in some global cohorts. 2. **Gastrointestinal:** Duodenal atresia ("Double bubble" sign) and Hirschsprung disease. 3. **Hematology:** Increased risk of **AMKL** (M7 subtype of AML) before age 3 and **ALL** after age 3. 4. **Screening:** First-trimester screening shows **increased nuchal translucency**, low PAPP-A, and high β-hCG. 5. **Brushfield spots:** White/grey spots on the periphery of the iris.

Q: A normal child typically achieves complete neck control by what age?

16 weeks. **Explanation:** Neck control is one of the earliest and most significant gross motor milestones, following a **cephalo-caudal** (head-to-toe) pattern of development. * **Correct Answer (B - 16 weeks):** By 4 months (16 weeks), a normal infant achieves **complete neck control**. When the child is pulled to a sitting position from a supine position, there is no "head lag." Additionally, when held in a prone position, the infant can lift their head and chest off the surface, supporting themselves on their forearms. * **Option A (8 weeks):** At 2 months, a child begins to develop neck muscles and can momentarily hold the head up when prone, but the head still lags significantly when pulled to sit. * **Option D & C (24 and 28 weeks):** These are too late for primary neck control. By 24 weeks (6 months), a child is typically beginning to sit with their own hand support (tripod position), and by 28 weeks (7 months), they can sit without support. **Clinical Pearls for NEET-PG:** 1. **Head Lag:** The persistence of head lag beyond 4–5 months is an early "red flag" for developmental delay or cerebral palsy. 2. **Ventral Suspension:** At birth, the head flops down; at 4 weeks, the infant can lift the head momentarily to the plane of the body; by 12 weeks, the head is held well above the plane of the body. 3. **Sequence:** Neck control (4 months) → Sitting without support (7 months) → Standing without support (10–11 months) → Walking independently (12–13 months).

Q: Short stature with widely spread nipples and webbing of the neck is seen in which condition?

Turner's syndrome. **Explanation:** The clinical triad of **short stature, widely spaced nipples (shield chest), and webbing of the neck (pterygium colli)** is a classic presentation of **Turner’s Syndrome (45, XO)**. This condition occurs due to complete or partial monosomy of the X chromosome in females. The short stature is primarily attributed to the haploinsufficiency of the **SHOX gene**. Other characteristic features include a low posterior hairline, cubitus valgus, and lymphedema of the hands and feet (especially in neonates). **Analysis of Incorrect Options:** * **A. Down’s Syndrome (Trisomy 21):** Characterized by intellectual disability, flat facial profile, epicanthal folds, Simian crease, and hypotonia. While short stature occurs, neck webbing and shield chest are not typical features. * **C. Klinefelter’s Syndrome (47, XXY):** These patients are typically **tall** with eunuchoid body proportions, gynecomastia, and small, firm testes. It does not present with neck webbing or short stature. * **D. Edward’s Syndrome (Trisomy 18):** Presents with severe growth retardation, micrognathia, low-set malformed ears, and characteristic **clenched fists with overlapping fingers** and rocker-bottom feet. **High-Yield Clinical Pearls for NEET-PG:** * **Cardiac Association:** Bicuspid aortic valve (most common) and Coarctation of the aorta. * **Renal Association:** Horseshoe kidney. * **Gonads:** "Streak ovaries" leading to hypergonadotropic hypogonadism and primary amenorrhea. * **Intelligence:** Usually normal, but may have specific deficits in visuospatial processing. * **Noonan Syndrome:** Often called "Male Turner’s" because it shares similar features (webbed neck, short stature) but occurs in both sexes and is associated with **Pulmonary Stenosis** (unlike Turner's, which involves the left side of the heart).

Q: A neonate has a large, purplish, slightly raised lesion on the skin of the forehead near the temporal area. As the child grows, the lesion grows as well and becomes increasingly prominent. This lesion may be a component of which of the following syndromes or diseases?

Sturge-Weber syndrome. **Explanation:** The clinical description of a large, purplish, slightly raised lesion on the forehead that grows proportionately with the child is characteristic of a **Port-wine stain (Nevus Flammeus)**. This is a congenital capillary malformation. **1. Why Sturge-Weber Syndrome (SWS) is correct:** SWS (Encephalotrigeminal Angiomatosis) is a neurocutaneous disorder characterized by a facial port-wine stain, typically in the distribution of the **trigeminal nerve** (ophthalmic and maxillary divisions). The underlying pathology involves a somatic mutation in the **GNAQ gene**, leading to vascular malformations in the skin, the eye (glaucoma), and the leptomeninges (ipsilateral leptomeningeal angioma). **2. Why the other options are incorrect:** * **Buerger's disease (Thromboangiitis obliterans):** A non-atherosclerotic inflammatory disease of small and medium-sized arteries/veins, strongly associated with heavy smoking, not congenital skin lesions. * **Milroy's disease:** A hereditary form of primary lymphedema caused by VEGFR3 mutations, presenting as lower limb swelling at birth, not vascular malformations. * **Osler-Weber-Rendu disease (Hereditary Hemorrhagic Telangiectasia):** Characterized by multiple telangiectasias on skin/mucous membranes and arteriovenous malformations (AVMs) in organs, but not a large, unilateral port-wine stain. **Clinical Pearls for NEET-PG:** * **Classic Triad of SWS:** Facial port-wine stain, Leptomeningeal angiomatosis (causing seizures/hemiparesis), and Glaucoma. * **Radiology:** Skull X-ray or CT shows characteristic **"Tram-track" calcifications** (gyriform calcifications) in the cerebral cortex. * **Management:** Port-wine stains are treated with **Pulse Dye Laser (PDL)**. Seizure control and monitoring for intraocular pressure are vital.

Q: At what age range does normal dysfluency of speech typically occur in a child?

2 and 4 years. **Explanation:** **Normal dysfluency** (also known as developmental stuttering) is a physiological phase in speech development where a child repeats sounds, syllables, or phrases. 1. **Why Option A is correct:** Between the ages of **2 and 4 years**, a child’s cognitive and language processing abilities often outpace their motor speech coordination. Their vocabulary is expanding rapidly, and they are learning to construct complex sentences. This "lag" results in hesitations or repetitions (e.g., "I-I-I want milk"). It is considered a normal developmental milestone, typically lasting less than six months, and usually resolves spontaneously without intervention. 2. **Why other options are incorrect:** * **Options B, C, and D:** By age 4, most children have developed the neuromuscular coordination required for fluent speech. Dysfluency that persists beyond age 4 or 5, or begins after this period, is more likely to be classified as **true stuttering** (pathological stammering) rather than developmental dysfluency. **High-Yield Clinical Pearls for NEET-PG:** * **Red Flags for Pathological Stuttering:** Facial grimacing, eye blinking during speech, avoidance of speaking, or dysfluency lasting >6 months. * **Management:** Reassure parents. Advise them not to interrupt, finish the child's sentences, or pressure the child to "speak slowly." * **Speech Milestones:** * 1 year: 1-3 words with meaning. * 2 years: 2-word phrases (Telegraphic speech). * 3 years: Uses pronouns and gives full name. * 4 years: Tells stories and uses past tense.

Question 1

You are examining an infant and the findings are as follows: Adductor angle - 100°, Popliteal angle - 90°, Dorsiflexion angle of foot - 70°, Scarf sign - Elbow crosses the middle but doesn't reach the anterior axillary line. What is the appropriate age of the infant?

Accepted Answer

4 - 6 months

Answer

0 - 3 months

Answer

10 - 12 months

Answer

7 - 9 months

Question 2

Tears are produced in the newborn after which period?

Accepted Answer

1 week

Answer

2 weeks

Answer

3 weeks

Answer

4 weeks

Question 3

Which sequence represents the order in which the following milestones are typically attained?

Accepted Answer

A → B → D → C

Answer

B → D → A → C

Answer

A → D → B → C

Answer

B → A → D → C

Question 4

Which of the following is true about Down's syndrome?

Accepted Answer

Simian crease

Answer

Hypotonia

Answer

Lymphedema

Answer

All of the above

Question 5

A child born normal, at 1 year of age, presents with an enlarged tongue, coarse facies, prominent forehead, flat face, depressed nasal bridge, and hepatosplenomegaly. What is the likely diagnosis?

Accepted Answer

Hurler syndrome

Answer

Hand-Schüller-Christian disease

Answer

Fabry disease

Answer

Hypothyroidism

Question 6

A normal child typically achieves complete neck control by what age?

Accepted Answer

16 weeks

Answer

8 weeks

Answer

28 weeks

Answer

24 weeks

Question 7

Short stature with widely spread nipples and webbing of the neck is seen in which condition?

Accepted Answer

Turner's syndrome

Answer

Down's syndrome

Answer

Klinefelter's syndrome

Answer

Edward's syndrome

Question 8

All are unique features of WHO growth charts 2006 EXCEPT:

Accepted Answer

The sample was collected from ten countries including India.

Answer

It establishes the breastfed infant as the normative growth model.

Answer

Includes new indicators such as skinfold thickness.

Answer

Reiterates that children grow similarly across the world.

Question 9

A neonate has a large, purplish, slightly raised lesion on the skin of the forehead near the temporal area. As the child grows, the lesion grows as well and becomes increasingly prominent. This lesion may be a component of which of the following syndromes or diseases?

Accepted Answer

Sturge-Weber syndrome

Answer

Buerger's disease

Answer

Milroy's disease

Answer

Osler-Weber-Rendu disease

Question 10

At what age range does normal dysfluency of speech typically occur in a child?

Accepted Answer

2 and 4 years

Answer

4 and 6 years

Answer

6 and 8 years

Answer

8 and 10 years

Growth and Development — MCQs

Growth and Development — MCQs

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