NEET Human Physiology 3

Question 1

What is the normal heart rate (pulse) for a healthy adult at rest?

Accepted Answer

60–100 bpm

Answer

A normal resting heart rate for adults ranges from 60 to 100 beats per minute (bpm), with trained athletes often having lower rates.

Question 2

Where does most nutrient absorption occur in the human digestive system?

Accepted Answer

Small intestine

Answer

The small intestine, with its villi and microvilli increasing surface area, is the primary site of nutrient absorption into the bloodstream.

Question 3

What is the name of the protein that carries oxygen in red blood cells?

Accepted Answer

Hemoglobin

Answer

Hemoglobin is an iron-containing protein in red blood cells that binds to oxygen in the lungs and releases it to tissues.

Question 4

Which part of the kidney is responsible for initial filtration of blood?

Accepted Answer

Bowman's capsule with glomerulus

Answer

The glomerulus (a capillary network) and Bowman's capsule together form the renal corpuscle where blood is filtered under pressure.

Question 5

What triggers the 'fight or flight' response in humans?

Accepted Answer

Sympathetic nervous system activation

Answer

The sympathetic nervous system triggers the fight-or-flight response, releasing adrenaline to increase heart rate, dilate airways, and redirect blood to muscles.

NEET - National Eligibility cum Entrance Test Practice Test

NEET - National Eligibility cum Entrance Test Practice Test

NEET Human Physiology 3