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

Hearing capacity may start fading as early as

Directions: Read the passage and answer the following question.

You’re bound to experience some perfectly normal changes as you get older. The trick is to come to terms with the things you simply can’t control and take charge of the things you know you can. Here’s a summary of what’s ahead.
Not so bright eyes? The first indication that you are getting older may be how far away from your eyes you have to hold the newspaper. If you hold it at arm’s length and your eyes tire easily, then you probably have presbyopia (‘old eye’). The lenses in your eyes are less flexible and can’t shift as easily from distant to near sight.
After the age of 40 you also have a higher risk of getting glaucoma, a build-up of pressure in the front of the eyes that can cause damage to the optic nerve and may produce blind spots or loss of peripheral vision. You may also develop cataracts that cloud your lenses and restrict your vision. Early detection is important for both problems.
What was that? Hearing losses actually begin in your twenties. High-frequency sounds start to fade first, then by the age of about 65, you may start to miss low-frequency sounds before hearing loss becomes noticeable. Not everyone becomes hard of hearing, but more than a third of people over the age of 65 have significant problems. Changes in the inner ear can also affect your balance, so you have to be more careful to prevent falls.

  1. your teenage

  2. your twenties

  3. your middle age

  4. by age 65
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hearing losses actually begin in your twenties.

Multiple choice

Endodermis mainly

  1. prevents loss of water from stele

  2. provides protection

  3. maintains rigidity

  4. All of the above

  5. -
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Correct Answer: It prevents loss of water from stele.

Multiple choice

Term inominate is related with

  1. nerve

  2. artery

  3. skeleton and artery

  4. None of these

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

The brachiocephalic artery or inominate artery is an artery of the mediastinum that supplies blood to the right arm and the head and neck. Inominate is a hip bone.

Multiple choice

Which of the following is not a function of nucleus?

  1. It plays a central role in cellular reproduction.

  2. It determines the form that a cell will exhibit.

  3. It carries hereditary information from one generation to another.

  4. It generates energy for a cell.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 The energy required for various chemical activities needed for life is released by mitochondria in the form of ATP molecules.

Multiple choice

Function of mitochondrion is

  1. excretion

  2. respiration

  3. digestion

  4. excretion and respiration
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mitochondrion is called as the powerhouse of the cell. It has a specific role in producing ATP, the energy currency. Thus, it plays a major role in respiration.

Multiple choice

Elephants have which of the following types of hearts?

  1. Myogenic

  2. Neurogenic

  3. Both 1 and 2

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A myogenic heart contracts by itself without any external stimulus, while a neurogenic heart contracts after receiving an external stimulus in the form of a nerve impulse. Elephants and all other mammals have myogenic hearts.

Multiple choice

The chief value of perspiration is that it

  1. eliminates body odour

  2. regulates body temperature

  3. improves the general health

  4. opens the pores in the skin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The chief value of perspiration is that it regulates body temperature.

Multiple choice

Mammalian thymus is mainly concerned with

  1. regulation of body temperature

  2. regulation of body growth

  3. immunological functions

  4. secretion of thyrotropin

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

The thymus is a specialized primary lymphoid organ of the immune system. In mammals, it is a bilobed organ in the region of the lower neck, above and in front of the heart.

Multiple choice

Select the incorrect statement regarding the spinal cord.

  1. Sensory information on pain and temperature is delivered by the spinothalamic system.

  2. Sensory information is transmitted up the dorsal column system.

  3. The corticospinal tract is mainly implicated with regular distal motor control.

  4. The cervical spinal cord stimulates the arms.

  5. The spinal cord is highly organized with decending sensory pathways.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The spinal cord is highly organised with ascending sensory pathways, descending motor tracts, motor neurones that strengthen, muscles and interneurones that commands both sensory and motor information.