Anatomy and Physiology MCQs

Integument

Where are sebaceous glands found?

In the digestive system

In the hypodermis

In the dermis

In the stratum corneum

Sebaceous glands produce sebum (oil) and are located in the dermis.

Author: rikazzz Comment

Body Temperature, Energy and Heat Loss

Which of the following is the most acceptable definition of the term “power”?

The rate of doing work

That which is stored and can be fully recovered and converted to kinetic energy

The concept applied to that which gives an object the ability to do work

The sum of an object’s potential and kinetic energies

Power refers to how fast work is done. That is, the time taken for the energy in joules to be used. The unit of power is the “watt” which is the same as joules per second.

Author: rikazzz Comment

Cardiovascular System

What is the pulse we feel in the anterior lateral wrist (in anatomical position – the normal wrist pulse) called?

Radial pulse

Ulnar pulse

Dorsalis pedis pulse

Brachial pulse

Radial pulse because we are palpating the radial artery at that position.

Author: rikazzz Comment

Body Temperature, Energy and Heat Loss

Why does perspiring cause heat energy to be lost from the body? Because:

Being at a lower temperature than the skin, sweat cools skin by conduction.

Evaporating water molecules remove heat in the form of their own kinetic energy.

The presence of sweat on the skin prevents infrared radiation being absorbed.

Sweat on the skin allows heat to be lost to the air by conduction.

Vaporising water molecules carry away more than the average kinetic energy. Temperature of an object is the average kinetic energy of its particles. The skin surface is left at a lower temperature.

Author: rikazzz Comment

Reproductive System

Which list of structures in the male reproductive tract has them in correct sequence?

Seminiferous tubules, epididymis, vas deferens, urethra, ejaculatory duct

Epididymis, seminiferous tubules, vas deferens, ejaculatory duct, urethra

Seminiferous tubules, epididymis, vas deferens, ejaculatory duct, urethra

Epididymis, seminiferous tubules, vas deferens, urethra, ejaculatory duct

Seminiferous tubules must precede the epididymis; and the ejaculatory duct must precede the urethra.

Author: rikazzz Comment

Chemistry for Physiology

If the label on a bottle of beer states that it contains 5.9% alcohol, how much alcohol does the bottle contain?

5.9 g per 100 ml

0.9 g per 100 ml

5.9 g

5.0 g per 100 ml

5.9% means that there is 5.9 g of alcohol per 100 ml of beer. “Percent” means “in a 100”.

Author: rikazzz Comment

Chemistry for Physiology

The Na+/K+ ATPase pump in the plasma membrane moves Na out of the cell and K into the cell against their concentration gradient. Then Na re-enters the cell and K leaks out of the cell, along their concentration gradients through their membrane channels. What is the movement of Na and K along their concentration gradients called?

Active transport

Diffusion

Facilitated diffusion

Osmosis

The movement of these ions down their concentration gradient is diffusion. The concentration gradient is produced by the active transport of the Na+/ K+ ATPase pump.

Author: rikazzz Comment

Chemistry for Physiology

Which of the following best describes a molecule?

The simplest structure in an ionic compound

One thousandth of a mole

The particles of which covalent compounds are composed

The smallest particle of an element

Molecules are the particles of covalent compounds.

Author: rikazzz Comment

Nervous System

Which part of the nervous system prepares you for vigorous activity (“to fight or flee”)?

Sympathetic