Question 1

Which of the following best describes the concept of emergent properties in human physiology?

Accepted Answer

Emergent properties are features that result from the interaction and integration of smaller components, making the whole greater than the sum of its parts.

Question 2

Which of the following is NOT a primary tissue type in the human body?

Accepted Answer

Adipose

Question 3

A patient is experiencing a rapid drop in blood glucose after fasting. Which organ systems are primarily involved in restoring glucose homeostasis?

Accepted Answer

Digestive, endocrine, and nervous systems

Question 4

Which of the following best distinguishes homeostasis from equilibrium?

Accepted Answer

Homeostasis maintains a dynamic steady state with constant internal conditions, while equilibrium means concentrations are equal across compartments.

Question 5

Which biomolecule is correctly matched with its building block and primary function?

Accepted Answer

Carbohydrate – Monosaccharide – Short and long term energy storage

Question 6

A scientist is studying the movement of potassium ions ($$K^+) $$across the cell membrane. According to the provided ion concentration chart, which compartment has the highest concentration of $$K^+$$?

Accepted Answer

Intracellular fluid (ICF)

Question 7

Which of the following is an example of a negative feedback loop in human physiology?

Accepted Answer

Regulation of blood glucose by insulin and glucagon

Question 8

In a homeostatic control system, what is the role of the integrating center?

Accepted Answer

To compare the input signal to the setpoint and coordinate an appropriate output signal

Question 9

Which of the following best describes the function of feedforward control in physiology?

Accepted Answer

It anticipates changes in a regulated variable and initiates responses before the variable changes.

Question 10

A patient has a genetic mutation that prevents the production of a certain protein. Which level of organization is directly affected first?

Accepted Answer

Cell

Question 11

Which organ system is primarily responsible for the exchange of gases between the internal and external environments?

Accepted Answer

Respiratory system

Question 12

Which of the following scenarios is an example of positive feedback?

Accepted Answer

Release of oxytocin causing increased uterine contractions during labor

Question 13

Which of the following best explains why the concentration of $$Na^+ is $$higher in plasma than in intracellular fluid?

Accepted Answer

Active transport mechanisms, such as the sodium-potassium pump, maintain this gradient.

Question 14

Which of the following is a correct sequence of organization from smallest to largest in the human body?

Accepted Answer

Molecules → Cells → Tissues → Organs → Organ systems → Organism

Question 15

A person is exposed to a toxin that disrupts the function of the effector in a homeostatic control system. What is the most likely consequence?

Accepted Answer

The response to restore homeostasis will not occur.

Question 16

Which of the following is an example of local control rather than reflex (long-distance) control?

Accepted Answer

Release of nitric oxide by endothelial cells causing local vasodilation

Question 17

Which of the following best describes the function of the cardiovascular system?

Accepted Answer

Transport of materials between all cells of the body

Question 18

Which of the following is a function of nucleic acids in the cell?

Accepted Answer

Unit for hereditary information and protein biosynthesis

Question 19

A patient is unable to maintain a stable internal temperature after exposure to cold. Which core concept of physiology is most directly affected?

Accepted Answer

Homeostasis

Introduction to Human Physiology: Core Concepts, Organization, and Homeostasis

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