Biology

Human Physiology and Anatomy

2,235 Questions

Human physiology and anatomy explore the structural organization and biological functions of the human body and its systems. Questions focus on the primary roles of organs, hormones, cellular components, and developmental processes. These fundamentals are integral to medical entrance tests and general science sections.

Organ functionsHormone functionsImmune system rolesDigestive systemCellular functions

Human Physiology and Anatomy Questions

Multiple choice

Which of the following is a function of stigmasterol?

  1. Breakdown and utilisation of proteins

  2. Cofactor for several enzymes

  3. Intermediate in the biosynthesis of androgens

  4. Acts as neurotransmitter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Stigmasterol acts as an intermediate in the biosynthesis of androgens.

Multiple choice

What are the main functions of saliva?

  1. Lubrication and moistening

  2. Digestion and dissolution of soluble substances

  3. Emulsification and chewing

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Saliva have all of the above functions, i.e. emulsification, moistening, lubrication, digestion and dissolution of food and substances.

Multiple choice

What is the main function of gall bladder?

  1. Production of bile

  2. Storage of bile

  3. Removal of toxic material

  4. Storage of glycogen and fat droplets
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The main purpose of gall bladder is to store bile. At any time, 30-60 cu. mm bile is stored within the gall bladder. #

Multiple choice

An independent part of the face is not formed by _________ in the Homo sapiens.

  1. pre maxilla

  2. palate

  3. maxillary suture

  4. maxilla

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In Homo sapiens, the premaxilla fuses with the maxilla during development and does not remain as an independent bone in adults. The palate forms the roof of the mouth, the maxillary suture is a joint between maxillary bones, and the maxilla is the main upper jaw bone.

Multiple choice

What is the function of nasal hair?

  1. Path for air

  2. Filtration

  3. Air conditioning

  4. Moistening
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nasal hair acts as a filter because large-sized bacteria, spores, dust particles, etc. which are inhaled with air get entangled between the nasal hair and removed.

Multiple choice

The function of Trypsin is to

  1. break down fats

  2. synthesize proteins

  3. break down proteins

  4. break down carbohydrates
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Trypsin is a proteolytic enzyme produced in the pancreas that specifically breaks down proteins into smaller peptides and amino acids during digestion. It does not act on fats or carbohydrates, and its role is catabolic (breaking down), not anabolic (synthesizing).

Multiple choice

Which of the following statements is/are false?

a. A gland which does not have a duct and secretes its products directly into the blood is called an endocrine gland. b. The cerebro spinal fluid protects the brain from the mechanical shocks. c. The reflexes which involve only the spinal cord are called as the cerebral reflexes.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option as this statement is false. The reflexes which involve only the spinal cord are called as the spinal reflexes, not the cerebral reflexes.

Multiple choice

What is the function of liver?

  1. It produces bile juice.

  2. It produces the enzyme 'ptyalin'.

  3. It produces the enzyme 'rennin'.

  4. It helps in pushing the bulk of food into the alimentary canal.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

.

Multiple choice

Which of the following is not a function of the blood in human body?

  1. It regulates the temperature of body.

  2. It helps in the blood-clotting.

  3. Blood helps the body against infection.

  4. It carries away waste products.

  5. None of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option, as all of the above are the function of blood in human body.

Multiple choice

Which of the following statement is/are false? a. Transpiration produces a cooling effect, which helps in preventing hot sunlight from damaging delicate cells of plants. b. A part of water absorbed by the roots is used by the plant to keep erect and stop getting wilted. c. In a human body, there are four types of blood vessels.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

In a human body, there are four types of blood vessels, is a false statement. There are three types of blood vessels - arteries, veins and capillaries. Thus, this is the correct option.

Multiple choice

Match the following:

 
a. Transpiration 1. The movement of particles from a high concentration to a low concentration area untill they are spread out evenly.
b. Circulatory system 2. The process of loss of water in vapour form from the leaves in plants.
c. Diffusion 3. The process of moving substances throughout the body with the help of blood.

  1. a - 2, b - 1, c - 3

  2. a - 2, b - 3, c - 1

  3. a - 1, b - 2, c - 3

  4. a - 1, b - 3, c - 2

  5. a - 3, b - 2, c - 1
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Transpiration is the loss of water in vapour form from the leaves in plants. Circulatory system is the movement of substances throughout the body with the help of blood. Diffusion is the movement of particles from a high concentration area to a low concentration area until they are spread out evenly.

Multiple choice

Blood makes up about _______ percent of our body weight.

  1. 10%

  2. 9%

  3. 8%

  4. 12%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blood constitutes approximately 8% of total body weight in an average adult. This percentage can vary slightly based on factors like age, sex, and overall health. The other options (9%, 10%, 12%) are not accurate representations of blood's proportion of body weight.