CNA Chapter 9 Exam Questions and Answers Latest Update 2025 (Rated A+) Already Passed
Homeostasis - Answers The condition in which all of the body's systems are working at their best.
Metabolism - Answers Physical and chemical processes by which substances are produced or broken
down into energy or products for use by the body.
Organs - Answers Structural units in the human body that perform specific functions.
Tissues - Answers Groups of cells that perform similar tasks.
Cells - Answers Basic structural units of the body that divide, develop, and die, renewing tissues and
organs.
Integument - Answers A natural protective coating.
Dilate - Answers To widen.
Constrict - Answers To narrow.
Bones - Answers Rigid connective tissues that make up the skeleton, protect organs, and allow the body
to move.
Joint - Answers The place at which two bones meet.
Muscles - Answers Groups of tissues that provide movement of body parts, protection of organs, and
creation of body heat.
Atrophy - Answers The wasting away, decreasing in size, and weakening of muscles from lack of use.
Contracture - Answers The permanent and often painful shortening of a muscle, usually due to a lack of
activity.
Central Nervous System (CNS) - Answers Part of the nervous system that is composed of the brain and
spinal cord.
Peripheral Nervous System (PNS) - Answers Part of the nervous system made up of the nerves that
extend throughout the body.
Systole - Answers Phase where the heart is at work, contracting and pushing blood out of the left
ventricle.
Diastole - Answers Phase where the heart relaxes or rests.
Respiration - Answers The process of breathing air into the lungs and exhaling air out of the lungs.
Inspiration - Answers Breathing in.
, Expiration - Answers Exhaling air out of the lungs.
Sputum - Answers Thick mucous coughed up from the lungs.
Urinary incontinence - Answers The inability to control the bladder, which leads to an involuntary loss of
urine.
Peristalsis - Answers Involuntary contractions that move food through the gastrointestinal system.
Digestion - Answers The process of preparing food physically and chemically so that it can be absorbed
into the cells.
Elimination - Answers The process of expelling solid wastes (made up of the waste products of food) that
are not absorbed into the cells.
Fecal incontinence - Answers The inability to control the bowels, leading to an involuntary passage of
stool.
Glands - Answers Organs that produce and secrete chemicals called hormones.
Hormones - Answers Chemical substances created by the body that control numerous body functions.
Reproduce - Answers To create new human life.
Gonads - Answers Sex glands.
Nonspecific immunity - Answers A type of immunity that protects the body from disease in general.
Specific immunity - Answers A type of immunity that protects against a particular disease that is
invading the body at a given time.
Lymph - Answers A clear yellowish fluid that carries disease-fighting cells called lymphocytes.
1. What is homeostasis? - Answers Homeostasis is the name for the condition in which all of the body's
systems are working at their best. To be in homeostasis, the body's metabolism (or physical and
chemical processes) must be working at a steady level.
2. What are 3 functions of the skin, or integument? - Answers -Prevents injury to internal organs
-Protects the body against entry of bacteria
-Prevents the loss of too much water
3. List 10 signs and symptoms to observe and report about the integumentary system. - Answers -Pale,
white or reddened, or purple areas
-Blisters or bruises
-Complaints of tingling, warmth, or burning
Homeostasis - Answers The condition in which all of the body's systems are working at their best.
Metabolism - Answers Physical and chemical processes by which substances are produced or broken
down into energy or products for use by the body.
Organs - Answers Structural units in the human body that perform specific functions.
Tissues - Answers Groups of cells that perform similar tasks.
Cells - Answers Basic structural units of the body that divide, develop, and die, renewing tissues and
organs.
Integument - Answers A natural protective coating.
Dilate - Answers To widen.
Constrict - Answers To narrow.
Bones - Answers Rigid connective tissues that make up the skeleton, protect organs, and allow the body
to move.
Joint - Answers The place at which two bones meet.
Muscles - Answers Groups of tissues that provide movement of body parts, protection of organs, and
creation of body heat.
Atrophy - Answers The wasting away, decreasing in size, and weakening of muscles from lack of use.
Contracture - Answers The permanent and often painful shortening of a muscle, usually due to a lack of
activity.
Central Nervous System (CNS) - Answers Part of the nervous system that is composed of the brain and
spinal cord.
Peripheral Nervous System (PNS) - Answers Part of the nervous system made up of the nerves that
extend throughout the body.
Systole - Answers Phase where the heart is at work, contracting and pushing blood out of the left
ventricle.
Diastole - Answers Phase where the heart relaxes or rests.
Respiration - Answers The process of breathing air into the lungs and exhaling air out of the lungs.
Inspiration - Answers Breathing in.
, Expiration - Answers Exhaling air out of the lungs.
Sputum - Answers Thick mucous coughed up from the lungs.
Urinary incontinence - Answers The inability to control the bladder, which leads to an involuntary loss of
urine.
Peristalsis - Answers Involuntary contractions that move food through the gastrointestinal system.
Digestion - Answers The process of preparing food physically and chemically so that it can be absorbed
into the cells.
Elimination - Answers The process of expelling solid wastes (made up of the waste products of food) that
are not absorbed into the cells.
Fecal incontinence - Answers The inability to control the bowels, leading to an involuntary passage of
stool.
Glands - Answers Organs that produce and secrete chemicals called hormones.
Hormones - Answers Chemical substances created by the body that control numerous body functions.
Reproduce - Answers To create new human life.
Gonads - Answers Sex glands.
Nonspecific immunity - Answers A type of immunity that protects the body from disease in general.
Specific immunity - Answers A type of immunity that protects against a particular disease that is
invading the body at a given time.
Lymph - Answers A clear yellowish fluid that carries disease-fighting cells called lymphocytes.
1. What is homeostasis? - Answers Homeostasis is the name for the condition in which all of the body's
systems are working at their best. To be in homeostasis, the body's metabolism (or physical and
chemical processes) must be working at a steady level.
2. What are 3 functions of the skin, or integument? - Answers -Prevents injury to internal organs
-Protects the body against entry of bacteria
-Prevents the loss of too much water
3. List 10 signs and symptoms to observe and report about the integumentary system. - Answers -Pale,
white or reddened, or purple areas
-Blisters or bruises
-Complaints of tingling, warmth, or burning
