CABT Anatomy and Physiology Fundamentals Questions and Answers

Question 1

A biomedical technician is troubleshooting an ECG machine that is displaying erratic readings from the limb leads. A fundamental understanding of physiology suggests that this issue is most likely related to the function of which system responsible for electrical signal conduction?

Accepted Answer

Nervous system

Answer

The nervous system is responsible for transmitting electrical impulses throughout the body. The heart's electrical activity, which the ECG machine measures, is initiated and coordinated by specialized nerve cells. Poor skin contact (integumentary system) can be a factor, but the underlying physiological principle of signal conduction is governed by the nervous system.

Question 2

Which of the following correctly describes the primary physiological function of the alveoli in the respiratory system?

Accepted Answer

To facilitate the exchange of oxygen and carbon dioxide between the air and the blood

Answer

The alveoli are tiny, thin-walled air sacs in the lungs where the crucial process of gas exchange occurs. Oxygen from inhaled air diffuses across the alveolar and capillary walls into the bloodstream, while carbon dioxide diffuses from the blood into the alveoli to be exhaled.

Question 3

The concept of homeostasis is fundamental to physiology. Which of the following scenarios best illustrates this principle?

Accepted Answer

The shivering of muscles in a cold environment to generate heat and maintain body temperature.

Answer

Homeostasis is the body's ability to maintain a stable internal environment despite external changes. Shivering is a physiological response to cold, where involuntary muscle contractions generate heat to counteract a drop in body temperature, thus maintaining internal stability.

Question 4

A patient is connected to a dialysis machine. This machine is performing the primary function of which anatomical organ?

Accepted Answer

Kidneys

Answer

The kidneys are the primary organs of the excretory system, responsible for filtering waste products from the blood and producing urine. A dialysis machine is an artificial replacement for this essential function when the kidneys fail.

Question 5

In the structural hierarchy of the human body, which level of organization is considered more complex than tissues?

Accepted Answer

Organs

Answer

The levels of structural organization in the body, from simplest to most complex, are: chemical (atoms/molecules), cellular, tissue, organ, organ system, and organism. Tissues are groups of similar cells that work together, and organs (like the heart or lungs) are composed of different types of tissues working together for a common function.

(CABT) Certified Associate in Biomedical Technology Practice Test

(CABT) Certified Associate in Biomedical Technology Practice Test

CABT Anatomy and Physiology Fundamentals Questions and Answers