$$\text{GFR} = \dfrac{\text{Urine concentration} \times \text{Urine flow rate}}{\text{Plasma concentration}}$$

Question 1

Which of the following best describes the primary function of the human skeletal system?

Accepted Answer

To provide structural support, protect internal organs, and facilitate movement

Question 2

A patient suffers a fracture in the femur. Which classification best describes the femur bone?

Accepted Answer

Long bone

Question 3

During vigorous exercise, muscle cells switch from aerobic to anaerobic metabolism. Which byproduct accumulates as a result?

Accepted Answer

Lactic acid

Question 4

Which equation correctly represents the overall process of cellular respiration in human cells?

Accepted Answer

$$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2 ightarrow 6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2\mathrm{O} + 	ext{energy}$$

Question 5

A person with chronic kidney disease has difficulty maintaining homeostasis. Which function of the excretory system is most directly impaired?

Accepted Answer

Filtration and removal of metabolic wastes from the blood

Question 6

Which of the following best explains why the left ventricle of the heart has a thicker muscular wall than the right ventricle?

Accepted Answer

It pumps blood to the entire body, requiring greater pressure

Question 7

Which of the following is a correct sequence of structures that air passes through during inhalation in the human respiratory system?

Accepted Answer

Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Alveoli

Question 8

A patient is diagnosed with hyperthyroidism, resulting in excessive thyroid hormone production. Which system is primarily affected?

Accepted Answer

Endocrine system

Question 9

Which of the following best describes the role of the pancreas in the digestive system?

Accepted Answer

It produces enzymes that digest carbohydrates, proteins, and lipids

Question 10

Which of the following is a function of the integumentary system?

Accepted Answer

Regulation of body temperature through sweat production

Question 11

A person touches a hot stove and quickly withdraws their hand. Which part of the nervous system is primarily responsible for this rapid response?

Accepted Answer

Somatic nervous system (reflex arc)

Question 12

Which hormone is primarily responsible for lowering blood glucose levels after a meal?

Accepted Answer

Insulin

Question 13

Which of the following best describes the main function of alveoli in the lungs?

Accepted Answer

To facilitate gas exchange between air and blood

Question 14

Which of the following equations represents the filtration rate in the kidneys?

Accepted Answer

$$	ext{GFR} = \dfrac{	ext{Urine concentration} 	imes 	ext{Urine flow rate}}{	ext{Plasma concentration}}$$

Question 15

Which of the following scenarios best illustrates the concept of homeostasis?

Accepted Answer

The body increases insulin secretion after a meal to lower blood glucose

Question 16

A person with a blocked bile duct may have difficulty digesting which type of nutrient?

Accepted Answer

Lipids (fats)

Question 17

Which of the following is a correct pairing of a muscle type and its characteristic?

Accepted Answer

Cardiac muscle – striated and involuntary

Question 18

Which of the following best explains why red blood cells are biconcave in shape?

Accepted Answer

To increase their surface area for gas exchange

Question 19

A person with damage to the hypothalamus may experience disruptions in which of the following?

Accepted Answer

Regulation of body temperature and hormone release

Question 20

Which of the following best describes the role of the myelin sheath in the nervous system?

Accepted Answer

It insulates axons to speed up nerve impulse transmission

Anatomia e Fisiologia Humana: Estruturas e Funções dos Sistemas do Corpo Humano

Study Guide - Practice Questions