Question 1

Which component of whole blood would an investigator examine to determine the concentration of dissolved carbon dioxide or hormones, such as testosterone?

Accepted Answer

A) the plasma 
B) the platelets 
C) the white blood cells 
D) the red blood cells

Question 2

Which of the following statements accurately describes the movement of water and waste within a nephron?

Accepted Answer

A) Water and waste both filter through the glomerulus; additional water is later secreted from capillaries. 
B) Water and waste both filter through the glomerulus; water is later reabsorbed from capillaries. 
C) Only waste filters through the glomerulus; water is secreted by capillaries along the length of the nephron. 
D) Only water filters through the glomerulus; waste is secreted by capillaries along the length of the nephron.

Question 3

The sensory receptor types that provide information about body position and balance to help you coordinate your dance moves are

Accepted Answer

A) chemoreceptors. 
B) mechanoreceptors. 
C) magnetoreceptors. 
D) electroreceptors.

Question 4

________ is the process of expelling carbon dioxide from the lungs and taking oxygen into the lungs.

Accepted Answer

The answer of ________ is the process of expelling carbon...

Question 5

Match each receptor type to the sensory experience described below.
-photoreceptors

Accepted Answer

A) You get into the bathtub and realize the water is moderately cold. 
B) You are cleaning your bathroom with undiluted bleach, which causes a burning sensation in your nose. 
C) You are eating dinner and enjoying both the taste and smell of your meal. 
D) You wake up in the morning and enjoy the sight of a beautiful sunrise.e.You hear thunder during a storm.

Question 6

Match each receptor type to the sensory experience described below.
-pain receptors

Accepted Answer

A) You get into the bathtub and realize the water is moderately cold. 
B) You are cleaning your bathroom with undiluted bleach, which causes a burning sensation in your nose. 
C) You are eating dinner and enjoying both the taste and smell of your meal. 
D) You wake up in the morning and enjoy the sight of a beautiful sunrise.e.You hear thunder during a storm.

Question 7

The structures that carry signals away from the cell body of a neuron are called

Accepted Answer

A) dendrites. 
B) axons. 
C) nuclei. 
D) synapses.

Question 8

One side of the heart pumps blood into the pulmonary circuit, and the other side of the heart pumps blood to the systemic circuit. How do these different functions affect the structure of the heart?

Accepted Answer

A) The left side of the heart has one large chamber, whereas the right side has two chambers. 
B) The right side of the heart has three chambers, whereas the left side has two chambers. 
C) The left side of the heart has a thicker muscular wall than the right side. 
D) The right side of the heart has a thicker muscular wall than the left side.

Question 9

Describe two ways in which the structure of capillaries allows gas exchange.

Accepted Answer

The answer of Describe two ways in which the structure...

Question 10

Gases move from an area of ________ concentration to an area of ________ concentration.

Accepted Answer

The answer of Gases move from an area of ________...

Question 11

The blood vessels that allow diffusion between blood and nearby body cells are

Accepted Answer

A) veins. 
B) capillaries. 
C) arteries. 
D) veins and capillaries.

Question 12

The external signals and information that are received by an organism are called

Accepted Answer

A) sensory receptors. 
B) dendrites. 
C) stimuli. 
D) nodes.

Question 13

Air that is entering the lungs has

Accepted Answer

A) a higher concentration of carbon dioxide than air in an alveolus. 
B) a higher concentration of both carbon dioxide and oxygen than air in an alveolus. 
C) a higher concentration of oxygen and a lower concentration of carbon dioxide than air in an alveolus. 
D) a lower concentration of oxygen but the same concentration of carbon dioxide as air in an alveolus.

Question 14

Which of the following structures has the smallest diameter?

Accepted Answer

A) the pharynx 
B) the trachea 
C) the bronchi 
D) the bronchioles

Question 15

Capillaries and alveoli both have similar walls. How is the structure of each related to a common function?

Accepted Answer

The answer of Capillaries and alveoli both have similar walls....

Question 16

Which of the following sensory receptor types is NOT found in humans?

Accepted Answer

A) chemoreceptors 
B) mechanoreceptors 
C) magnetoreceptors 
D) thermoreceptors

Question 17

Describe how the central nervous system (CNS) and the peripheral nervous system (PNS) work together as a coordinated unit.

Accepted Answer

The answer of Describe how the central nervous system (CNS)...

Question 18

Blood vessels that are designed to carry blood under high pressure are called ________. Blood vessels that have thin, porous walls are called ________.

Accepted Answer

The answer of Blood vessels that are designed to carry...

Question 19

Which of the following functions occurs in the urinary bladder but NOT in nephrons?

Accepted Answer

A) urine storage 
B) filtration 
C) secretion 
D) reabsorption

Question 20

Which of the following sequences correctly describes the journey of a molecule of oxygen from the pharynx to an alveolus?

Accepted Answer

A) pharynx to trachea to bronchus to bronchiole to alveolus 
B) pharynx to bronchiole to bronchus to trachea to alveolus 
C) pharynx to trachea to bronchiole to bronchus to alveolus 
D) pharynx to bronchus to bronchiole to trachea to alveolus

Exam 21: Circulatory, Respiratory, Urinary, and Nervous Systems