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 biology animal tissue muscular tissues muscle tissue muscle tissues

Loss of water from body occurs by all of the following except

  1. Muscles

  2. Lungs

  3. Kinney

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

Water loss from the body occurs through lungs (respiration), kidneys (urine), and skin (sweat). Muscles are not a route for water excretion - they're tissues that store water, not eliminate it. The option C has a typo (Kinney instead of Kidney).

Multiple choice zoology nervous system of man parts of the brain brain and its parts brain

The branched tree-like structure/tree of life present in the cerebellum is

  1. Arbor vitae

  2. Arborial

  3. Archenteron

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

The cerebellum is the region of the hind brain. The cortex of cerebellum is made up of grey matter which is external to the white matter. The white matter projects outside and forms a branching pattern of a tree, which is called the Arbor Vitae or the tree of life. It is required for the coordination of various movements of the body. It also allows the cerebellum to communicate with the parts of the brain. 

Hence, the correct answer is 'Arbor vitae'

Multiple choice botany classical genetics variation and its type natural selection introduction to genetics

Some individuals produce lesser amounts of insulin. It is a type of

  1. Physiological variation

  2. Behavioural variation

  3. Morphological variation

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Physiological variation is related to the differences in the ways individuals of the same species react to conditions in their environment because of difference in their functioning of the body. Production of insulin is an example of physiological variation.
  • So, the correct option is 'Physiological variation'
Multiple choice physics world of sounds sound produced by humans propagation of sound production and propagation of sound

How does sound is produced by humans?

  1. In humans sound is produced by the voice box.

  2. In humans sound is produced by the larynx.

  3. In humans sound is produced by the upper part of the wind pipe.

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

In humans sound is produced by the voice box or larynx. It is the upper part of the windpipe. Two vocal cords are stretched across the voice box leaving a narrow slit. When the lungs force air through the slit, it vibrates and produces sound.

Multiple choice biology structure and functions of living organisms -ii dental care, eye care and hair care dental care and dental diseases salivary glands

The salivary glands produce saliva. What is the function of saliva?

  1. Digestion of food

  2. Purification of blood

  3. Keeping our body cool

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • Saliva is a thick, colourless and glistening liquid with about 98 per cent water in our mouth. The saliva contains chemicals like the mucus, salts, antibacterial substances and enzymes which help in the digestion of food especially starch.
  • The digestion of starch into a sugar called the maltose is done because of an enzyme, salivary amylase that the saliva contains. 
Multiple choice bio-chemistry human body and organ system role of blood in transport function of blood blood and lymph body fluid

The function of blood is to

  1. Absorb nutrients

  2. Transport gases

  3. Produce food

  4. Both B and C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Blood performs many important functions within the body. These functions include the supply of oxygen to tissues (bound to hemoglobin, which is carried in red cells), the supply of nutrients such as glucose, amino acids, and fatty acids (dissolved in the blood or bound to plasma proteins e.g., blood lipids), transport of gases etc.

Therefore, the correct answer is option B.

Multiple choice bio-chemistry human body and organ system role of blood in transport function of blood blood and lymph body fluid

What fraction of your body is water? 

  1. 1/4

  2. 2/3

  3. 1/2

  4. 1/3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

About 2/3 of the average human body is water, mostly within the cells. The amount of water in the human body ranges from 50-75%. The average adult human body is 50-65% water, averaging around 57-60%. The percentage of water in infants is much higher, typically around 75-78% water, dropping to 65% by one year of age. Thus, option B is correct.

Multiple choice bio-chemistry human body and organ system role of blood in transport function of blood blood and lymph body fluid

How blood helps in the transport of heat ?

  1. It transports heat from alimentary canal to different body parts.

  2. Export heat from endocrine glands to the places of use.

  3. Allows transfer of heat from deeper tissues to the surface of the body where it can be lost.

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

Blood allows heat transfer of heat from deeper tissues to the surface of the body where it can be lost. Hormones are carried by blood from endocrine glands to place of use, Also glucose and other nutrients are transported from alimentary canal through blood to different cells in the body.

Multiple choice bio-chemistry human body and organ system role of blood in transport function of blood blood and lymph body fluid

Which of the following is a function of blood?
(a) Transport of food materials.
(b) Transport of hormones.
(c) Transport of heat.

  1. One statement is correct.

  2. Two statements are correct.

  3. All statements are correct.

  4. No statement is correct.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blood transports the digested food from the alimentary canal to the tissue. Blood also distribute hormones secreted by the endocrine glands. The blood helps in keeping the temperature of the body uniform by distributing heat. Thus option C is the correct answer. 

Multiple choice bio-chemistry human body and organ system role of blood in transport function of blood blood and lymph body fluid

The term dynamic homeostasis refers to the fact that

  1. Homeostatic mechanisms keep physiological responses from fluctuating.

  2. Homeostatic mechanisms allow for physiological responses to slightly fluctuate within a normal range.

  3. Homeostatic mechanisms keep fluctuations in physiological responses right at set point.

  4. Homeostatic mechanisms allow for large fluctuations that will reset the set point.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The ability of the body to regulate its internal physiological processes in order to maintain the equilibrium is called the dynamic equilibrium. It is performed to keep the physiological responses from fluctuating with the external conditions of the environment. Different organ system work under the regulation of hypothalamus and medulla maintain the dynamic homeostasis. 

Hence, the correct answer is 'Homeostasis mechanisms keep physiological responses from fluctuating'