Q: Which of the following is the correct formula for calculating the percentage of total body water (TBW) in a 70 kg person, given that TBW is 42 L?

$$\text{Percentage of TBW} = \frac{42}{70} \times 100$$

Question 1

Which of the following best describes the primary function of neurons in the human body?

Accepted Answer

To transmit information in the form of electrical signals

Question 2

A patient has a disorder affecting the basement membrane of epithelial tissue. Which of the following processes is most likely to be directly impaired?

Accepted Answer

Separation of body fluids from the external environment

Question 3

Which of the following is a correct hierarchical order of biological organization in the human body?

Accepted Answer

Cells → Tissues → Organs → Organ Systems

Question 4

Which of the following statements about connective tissue is TRUE?

Accepted Answer

Connective tissue includes blood, bone, and fat cells

Question 5

A gland that releases its product into a duct leading to the external environment is classified as:

Accepted Answer

An exocrine gland

Question 6

Which of the following best explains why the pancreas is considered part of both the digestive and endocrine systems?

Accepted Answer

It secretes digestive enzymes into the intestines and hormones into the bloodstream

Question 7

Which of the following is the correct formula for calculating the percentage of total body water (TBW) in a 70 kg person, given that TBW is 42 L?

Accepted Answer

$$	ext{Percentage of TBW} = \frac{42}{70} 	imes 100$$

Question 8

Which of the following best describes the difference between absorption and reabsorption in the context of the gastrointestinal and urinary systems?

Accepted Answer

Absorption refers to the movement of substances from the lumen into the blood, while reabsorption refers to the movement of filtered substances from the kidney tubules back into the blood

Question 9

A patient is found to have a defect in the collagen protein of their connective tissue. Which of the following symptoms would most likely be observed?

Accepted Answer

Decreased tensile strength in tendons and ligaments

Question 10

Which of the following compartments contains the largest volume of water in the human body?

Accepted Answer

Intracellular fluid

Question 11

Which of the following is a function of the epithelial tissue lining the lungs and gastrointestinal tract?

Accepted Answer

Forming a barrier between the external and internal environments

Question 12

Which of the following best describes the internal environment of the body?

Accepted Answer

The fluid that surrounds most of the body's cells, including plasma and interstitial fluid

Question 13

Which of the following is NOT a function of the cardiovascular system?

Accepted Answer

Filtering the blood to regulate sodium, potassium, and ion concentrations

Question 14

A scientist is studying a tissue that consists of a continuous sheet of cells with a basement membrane and is involved in absorption and secretion. Which type of tissue is being studied?

Accepted Answer

Epithelial tissue

Question 15

Which of the following best explains why plasma and interstitial fluid are similar in composition?

Accepted Answer

Capillary walls are highly permeable to most solutes except proteins

Question 16

A patient is unable to properly reabsorb water in their kidneys. Which of the following would most likely result?

Accepted Answer

Increased urine output and dehydration

Question 17

Which of the following equations correctly represents the relationship between total body water (TBW), intracellular fluid (ICF), and extracellular fluid (ECF)?

Accepted Answer

$$	ext{TBW} = 	ext{ICF} + 	ext{ECF}$$

Question 18

Which of the following is a real-world example of the importance of coordinated organ system function?

Accepted Answer

Oxygen delivery to tissues depends on the respiratory, cardiovascular, and renal systems working together

Question 19

Which of the following best describes the function of elastin in connective tissue?

Accepted Answer

Gives the tissue elasticity, allowing it to return to its original shape

Question 20

Which of the following is NOT considered part of the extracellular fluid (ECF)?

Accepted Answer

Intracellular fluid

Introduction to Physiology: Organization of the Human Body

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