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NEET Zoology– Set 1 | Human Physiology and Body Functions

 

NEET Zoology PYQ (Inspired) – Set 1 | Human Physiology and Body Functions

These 10 NEET-level Zoology questions are inspired by previous NEET papers (2016–2024), rewritten uniquely while keeping the same NCERT concepts and difficulty pattern.

1. Which part of the nephron is primarily responsible for selective reabsorption of glucose?
Correct Answer: Proximal convoluted tubule
PCT has abundant microvilli and mitochondria, enabling active reabsorption of glucose, amino acids, and ions.
2. Which one of the following hormones increases calcium absorption from the small intestine?
Correct Answer: Parathyroid hormone
PTH stimulates activation of Vitamin D, which enhances Ca2+ absorption from the intestine.
3. Normal blood pressure in humans is approximately:
Correct Answer: 120/80 mm Hg
This is the standard value for systolic/diastolic blood pressure in a healthy adult.
4. Which muscle type is striated but involuntary?
Correct Answer: Cardiac muscle
Cardiac muscle shows striations and intercalated discs but functions involuntarily.
5. Which one of the following digestive enzymes is secreted in an inactive form?
Correct Answer: Trypsin
It is secreted as trypsinogen, activated by enterokinase in the intestine.
6. Which component of blood is mainly responsible for clot formation?
Correct Answer: Platelets
Platelets release thromboplastin which initiates clotting.
7. Which structure acts as the pacemaker of the heart?
Correct Answer: SA node
SA node generates the fastest spontaneous action potentials.
8. Which vitamin is essential for normal vision and photoreceptor function?
Correct Answer: Vitamin A
Retinal (derived from Vitamin A) is a component of rhodopsin in rods.
9. Vital capacity of lungs is given by:
Correct Answer: IRV + TV + ERV
Vital capacity = Maximum volume of air a person can exhale after maximum inhalation.
10. Which of the following is the functional unit of the nervous system?
Correct Answer: Neuron
Neuron conducts impulses and forms the fundamental structural and functional unit of the nervous system.
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