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

Among the following, which is not the property of human blood?

  1. Osmolality of blood is 275 to 295 milliosmoles per kg

  2. Sweet taste

  3. Blood pH varies from 7.35 to 7.45

  4. Red colour

  5. Smells like rusty iron
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood is salty tasty. The salt taste of blood comes from the salts, minerals and iron present in human blood. So the blood of normal persons is salty only, but it has sweet taste in some persons suffering from diabetes. As the blood of a diabetic person will contain much sugar than a normal person the blood is tasting sweety.

Multiple choice

Which among the following is not a characteristic function of ER?

  1. It acts as a supportive framework for the cell.

  2. It helps in the synthesis of proteins.

  3. It gives rigidity and shape to the cell.

  4. It helps in the transportation of proteins and lipids.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cell wall gives rigidity and shape to the plant cell. Endoplasmic reticulum helps in the synthesis and transport of proteins and fats.

Multiple choice

The arrector pili muscle consists of:

  1. Straited muscle fibres.

  2. Smooth muscles.

  3. Cardiac muscle fibre.

  4. Sketelat muscle fibre.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

They are associated with the movements that are not under will.

Multiple choice

Which of the following twins is asymmetrically conjoined?

  1. Parasitic twins

  2. Craniopagus

  3. Cephalothoracopagus

  4. Pygopagus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Here in this type of twins,  the twins are asymmetrically conjoined leading in the formation of one twin, i.e. small, less formed, and dependent on the bigger one for survival.

Multiple choice

Why do growing children need more proteins?

  1. To make them taller.

  2. To grow and develop them in a healthy pace

  3. To prevent the children from falling ill frequently

  4. To make their bones stronger

  5. To give them more energy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Growing child need more protein mainly because they are actively growing and increasing their body mass. Protein helps to build and repair cells, to make essential hormones and enzymes in the body.

Multiple choice

It is the principal buffer of __________.

Bicarbonate buffer is a critical buffer of our body

  1. extracellular fluid (ECF)

  2. intracellular fluid

  3. blood plasma

  4. the RBC

  5. tissue fluid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bicarbonate is the principal buffer of blood plasma. It consists of bicarbonate (HCO-3) and carbonic acid (H2CO3) as the base and acid members respectively. The bicarbonate buffer neutralizes stronger dietary and metabolic acids changing them to corresponding conjugate bases.

Multiple choice

Deviation of tongue to the right side indicates __________.

  1. hypoglossal nerve injury of right side

  2. hypoglossal nerve injury of left side

  3. lingual nerve injury of left side

  4. lingual nerve injury of right side
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hypoglossal nerve is a somatic motor nerve, supplying all extrinsic and intrinsic muscles of tongue. If there is hypoglossal nerve injury (due to penetrating injury to the neck and a skull base pathology), it causes the following:

  1. Atrophy of ipsilateral muscle of the tongue and deviation towards the affected side with speech disturbance.
  2. Deviation of tongue to right side as hypoglossal nerve on right side is injured.
Multiple choice

Which of the following statements is incorrect?

  1. Lymphatic system takes part in the nutritive process of the body.

  2. Lymphatic system protects the body by killing the germs drained out of the body tissues.

  3. The lymphatic capillaries contain lymphocytes that clean the lymph and protect the body from disease.

  4. The lymphatic system removes waste products from the body.

  5. Lymph flows in one direction, from the body tissues to the heart.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer choice as this statement is incorrect. The lymph capillaries are mainly responsible for the absorption of interstitial fluid from the tissues.

Multiple choice

Which of the following statements is/are false?

a. In animal tissues, living tissues are more abundant as compared to dead tissues. b. Impulse is the passage of electrical activity along the axon of a nerve cell. c. Lymph transports excretory products from the tissues to the liver and kidney.

  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. Blood transports excretory products from the tissues to the liver and kidney.

Multiple choice

Which of the following is not a function of the adipose tissue?

  1. It acts as an insulator.

  2. It keeps visceral organs in position.

  3. It provides shape to the limbs and the body.

  4. It serves as a storage site for calcium and phosphate.

  5. It serves as a fat reservoir.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as this is not a function of the adipose tissue. Adipose tissue does not serve as a storage site for calcium and phosphate.

Multiple choice

What is the primary function of sacroplasmic reticulum?

  1. Store calcium ions

  2. Synaptic transmission

  3. Forms myelin sheath

  4. Regeneration of nerves

  5. Acts as scavenger cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The sarcoplasm is the specialized cytoplasm of a muscle cell that contains the usual subcellular elements along with the golgi apparatus, abundant myofibrils, a modified endoplasmic reticulum known as the sarcoplasmic reticulum (SR), myoglobin and mitochondria. The SR forms a network around the myofibrils, storing and providing the Ca2+ that is required for muscle contraction.