CNA CHAPTER 9 EXAM FULL QUESTIONS AND
ANSWERS 2026 GRADED A+
◉ Metabolism. Answer: Physical and chemical processes by which
substances are produced or broken down into energy or products
for use by the body.
◉ Organs. Answer: Structural units in the human body that perform
specific functions.
◉ Tissues. Answer: Groups of cells that perform similar tasks.
◉ Cells. Answer: Basic structural units of the body that divide,
develop, and die, renewing tissues and organs.
◉ Integument. Answer: A natural protective coating.
◉ Dilate. Answer: To widen.
◉ Constrict. Answer: To narrow.
, ◉ Bones. Answer: Rigid connective tissues that make up the
skeleton, protect organs, and allow the body to move.
◉ Joint. Answer: The place at which two bones meet.
◉ Muscles. Answer: Groups of tissues that provide movement of
body parts, protection of organs, and creation of body heat.
◉ Atrophy. Answer: The wasting away, decreasing in size, and
weakening of muscles from lack of use.
◉ Contracture. Answer: The permanent and often painful shortening
of a muscle, usually due to a lack of activity.
◉ Central Nervous System (CNS). Answer: Part of the nervous
system that is composed of the brain and spinal cord.
◉ Peripheral Nervous System (PNS). Answer: Part of the nervous
system made up of the nerves that extend throughout the body.
◉ Systole. Answer: Phase where the heart is at work, contracting
and pushing blood out of the left ventricle.
◉ Diastole. Answer: Phase where the heart relaxes or rests.
ANSWERS 2026 GRADED A+
◉ Metabolism. Answer: Physical and chemical processes by which
substances are produced or broken down into energy or products
for use by the body.
◉ Organs. Answer: Structural units in the human body that perform
specific functions.
◉ Tissues. Answer: Groups of cells that perform similar tasks.
◉ Cells. Answer: Basic structural units of the body that divide,
develop, and die, renewing tissues and organs.
◉ Integument. Answer: A natural protective coating.
◉ Dilate. Answer: To widen.
◉ Constrict. Answer: To narrow.
, ◉ Bones. Answer: Rigid connective tissues that make up the
skeleton, protect organs, and allow the body to move.
◉ Joint. Answer: The place at which two bones meet.
◉ Muscles. Answer: Groups of tissues that provide movement of
body parts, protection of organs, and creation of body heat.
◉ Atrophy. Answer: The wasting away, decreasing in size, and
weakening of muscles from lack of use.
◉ Contracture. Answer: The permanent and often painful shortening
of a muscle, usually due to a lack of activity.
◉ Central Nervous System (CNS). Answer: Part of the nervous
system that is composed of the brain and spinal cord.
◉ Peripheral Nervous System (PNS). Answer: Part of the nervous
system made up of the nerves that extend throughout the body.
◉ Systole. Answer: Phase where the heart is at work, contracting
and pushing blood out of the left ventricle.
◉ Diastole. Answer: Phase where the heart relaxes or rests.
