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

Iron is an extremely important transition metal in biology. It helps to perform many different biological functions such as

  1. transport of O2 to tissues
  2. release of O2 to muscle cells
  3. cofactor to some enzymes

  1. Only 1

  2. Only 2

  3. Only 3

  4. Only 1 and 2

  5. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Hemoglobin is an iron containing oxygen transport metalloprotein, which transports O2 from the lungs to the tissues. Myoglobin, an iron containing protein in muscle, receives oxygen from the red blood cells and transports it to the mitochondria of muscle cells. Many enzymes vital to life contain iron, such as catalase, lipoxygenases, and IRE-BP.

Multiple choice

What is/are the function(s) of lymph?

  1. They possess lymphocytes.

  2. They protect the body from various diseases.

  3. They equalise the body temperature.

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

This is correct. It possesses lymphocytes. It protects the body from various diseases. It equalises the body temperature.

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 digestive enzyme produced in the pancreas that breaks down proteins into smaller peptides in the small intestine. It is essential for protein digestion. It does not synthesize proteins or break down fats or carbohydrates.

Multiple choice

Pituitary gland is present:

  1. below the brain

  2. above the brain

  3. inside the brain

  4. no where near the brain
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pituitary gland is a small, pea-sized gland located at the base of the brain, just below the hypothalamus. It is often called the 'master gland' because it controls several other hormone-secreting glands.

Multiple choice

Which of the following is not a function of the blood?

  1. Transport of nutrition

  2. Regulation of body temperature

  3. Maintenance of water balance

  4. Regulation of vitamin metabolism

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blood functions include transporting nutrients, oxygen, and waste, regulating body temperature, and maintaining pH balance. It does not play a direct role in the regulation of vitamin metabolism.

Multiple choice

Which is the function of white blood corpuscles?

  1. To produce anti-toxin

  2. To carry excretory meterial

  3. To carry oxygen

  4. To carry microbes that cause disease
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

White blood cells (leukocytes) are essential components of the immune system. They protect the body by producing anti-toxins and antibodies to neutralize pathogens and by engulfing foreign particles.

Multiple choice

Which of the following is the function of pericardial fluid?

  1. Protection against infections

  2. Protects heart from injury and against friction

  3. Keeps the heart moist and protects it from external shocks

  4. Provides nutrition to the heart cells
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pericardial fluid keeps the heart moist and protects it from external shocks and friction at the time of bleeding.

Multiple choice

All of the following are functions of circulatory system, except

  1. transport of nutrients, waste products, hormones and metabolic intermediates

  2. transport of respiratory gases

  3. gaseous exchange

  4. protection from diseases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gaseous exchange is a function of respiratory system. It happens by the phenomenon of breathing.

Multiple choice

The function of acetylcholine is to

  1. regulate the beating of myogenic heart

  2. regulate the heartbeat of neurogenic heart

  3. Both (1) and (2)

  4. Bind to the respiratory gases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Acetylcholine inhibits myogenic heart and increases the heartbeat of neurogenic heart.