$$n_N = \text{number of organ systems} \times \text{average neurons per system}$$

Question 1

Which statement best describes the interdependence of body cells in multicellular humans?

Accepted Answer

Cells depend on organ systems to meet their survival needs, and organ systems cooperate to maintain life.

Question 2

A patient suffers from muscle weakness and poor movement coordination. Which two organ systems are most likely involved in this scenario?

Accepted Answer

Muscular and nervous systems

Question 3

Which organ system is primarily responsible for transporting nutrients, gases, and wastes throughout the body?

Accepted Answer

Cardiovascular system

Question 4

If the respiratory system fails to supply oxygen, which organ system will be directly affected first, and why?

Accepted Answer

Cardiovascular system, because it transports oxygen to tissues

Question 5

Which equation best represents the relationship between the number of neurons ($$n_N) $$and body function integration?

Accepted Answer

$$n_N = 	ext{number of organ systems} 	imes 	ext{average neurons per system}$$

Question 6

A person is unable to regulate blood glucose levels after a meal. Which organ system is most likely malfunctioning?

Accepted Answer

Endocrine system

Question 7

Which organ system is responsible for protecting the body from environmental hazards and regulating body temperature?

Accepted Answer

Integumentary system

Question 8

A patient presents with swelling and frequent infections. Which organ system is most likely compromised?

Accepted Answer

Lymphatic system

Question 9

Which organ system is directly involved in the production of movement and heat generation?

Accepted Answer

Muscular system

Question 10

A blockage in the large intestine would most directly affect which organ system’s function?

Accepted Answer

Digestive system

Question 11

Which organ system is responsible for removing nitrogenous wastes from the blood and maintaining water balance?

Accepted Answer

Urinary system

Question 12

If the nervous system fails to communicate with the muscular system, which physiological process will be most affected?

Accepted Answer

Movement

Question 13

Which organ system is primarily responsible for the exchange of oxygen and carbon dioxide between the blood and the environment?

Accepted Answer

Respiratory system

Question 14

A patient with brittle bones and frequent fractures likely has a disorder in which organ system?

Accepted Answer

Skeletal system

Question 15

Which organ system is responsible for producing hormones that regulate metabolism, growth, and reproduction?

Accepted Answer

Endocrine system

Question 16

Which organ system is most directly involved in the absorption of nutrients from food?

Accepted Answer

Digestive system

Question 17

A patient is unable to produce offspring due to a malfunction in which organ system?

Accepted Answer

Reproductive system

Question 18

Which organ system is responsible for defending the body against pathogens and returning leaked fluids to the blood?

Accepted Answer

Lymphatic system

Question 19

If the cardiovascular system fails, which other organ system will be immediately affected due to lack of nutrient and oxygen delivery?

Accepted Answer

All organ systems

Question 20

Which organ system provides the structural framework for the body and protects internal organs?

Accepted Answer

Skeletal system

Overview of Human Organ Systems and the Interdependence of Body Cells

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