Straighterline Anatomy and Physiology 1 Final
Exam Questions and Correct Answers with
Verified Solutions | New Update 2026
What is the smallest level of organization in the body that contains the body's
genetic information?
a. chemical
b. cellular
c. tissue
d. organism - ✔✔ANSWER✔✔-cellular The cellular level includes the nucleus,
an organelle that contains the body's genetic information.
Which is an example of a normally occurring positive-feedback mechanism?
Select one:
a. elevated blood pressure during exercise
b. increase in heart rate after blood loss
c. decrease in blood pressure after blood loss
d. stretching of the uterus near the end of pregnancy - ✔✔ANSWER✔✔-d.
stretching of the uterus near the end of pregnancy
,Which is the most superficial layer of skin that is composed primarily of living
cells?
Select one:
a. stratum corneum
b. stratum lucidum
c. stratum basale spinosum.
d. stratum spinosum - ✔✔ANSWER✔✔-.
d. stratum spinosum (stratum basale layer is below the stratum spinosum)
Which of the following is the definition of a third degree burn?
Select one:
a. a burn that covers at least 25% of the skin
b. a burn that has destroyed the dermis and epidermis
c. a burn that can only be caused by fire
d. a burn that does not leave scars - ✔✔ANSWER✔✔-a burn that has
destroyed the dermis and epidermis. How much skin the burn covers does not
definite which degree of burn it is.
Which of the following types of openings in the skeletal system does a "sinus"
describe?
Select one:
a. cavity
b. cleft
,c. hole
d. tunnel - ✔✔ANSWER✔✔-a. cavity: a sinus is an air space within bone.
Which of the following components of the bone matrix, when removed, allows
the bone to be easily shattered?
Select one:
a. cartilage
b. collagen
c. hydroxyapatite
d. mineral - ✔✔ANSWER✔✔-b. Collagen is a component of the bone matrix
that gives it flexible strength so it is less brittle.
Which of the following is the most widely distributed type of muscle in the
body?
Select one:
a. cardiac
b. postural
c. skeletal
d. smooth - ✔✔ANSWER✔✔-d. smooth
Which sentence best describes the sliding filament model of muscle
contraction?
Select one:
a. Actin and myosin filaments remain stationary.
, b. Actin and myosin myofilaments shorten.
c. Sarcomeres and myofibrils contract.
d. Sarcomeres and myofibrils lengthen. - ✔✔ANSWER✔✔-c. Sarcomeres and
myofibrils contract. The shortening of sarcomeres is responsible for
contraction, and thus myofibrils (sarcomeres joined end to end) also shorten
A doctor performing an autopsy on a patient concludes that part of the brain
was likely damaged by trauma due to a large population of which type of cell?
Select one:
a. Schwann cells
b. microglia
c. oligodendrocytes
d. ependymal cells - ✔✔ANSWER✔✔-b. microglia
What type of axons is found in a gray ramus comunicans?
Select one:
a. myelinated, pre-ganglionic axons
b. myelinated, post-ganglionic axons
c. unmyelinated, pre-ganglionic axons
d. unmyelinated, post-ganglionic axons - ✔✔ANSWER✔✔-d. unmyelinated,
post-ganglionic axons
Which class of chemical messengers is secreted by neurons into synaptic clefts
to activate an adjacent cell?
Select one:
Exam Questions and Correct Answers with
Verified Solutions | New Update 2026
What is the smallest level of organization in the body that contains the body's
genetic information?
a. chemical
b. cellular
c. tissue
d. organism - ✔✔ANSWER✔✔-cellular The cellular level includes the nucleus,
an organelle that contains the body's genetic information.
Which is an example of a normally occurring positive-feedback mechanism?
Select one:
a. elevated blood pressure during exercise
b. increase in heart rate after blood loss
c. decrease in blood pressure after blood loss
d. stretching of the uterus near the end of pregnancy - ✔✔ANSWER✔✔-d.
stretching of the uterus near the end of pregnancy
,Which is the most superficial layer of skin that is composed primarily of living
cells?
Select one:
a. stratum corneum
b. stratum lucidum
c. stratum basale spinosum.
d. stratum spinosum - ✔✔ANSWER✔✔-.
d. stratum spinosum (stratum basale layer is below the stratum spinosum)
Which of the following is the definition of a third degree burn?
Select one:
a. a burn that covers at least 25% of the skin
b. a burn that has destroyed the dermis and epidermis
c. a burn that can only be caused by fire
d. a burn that does not leave scars - ✔✔ANSWER✔✔-a burn that has
destroyed the dermis and epidermis. How much skin the burn covers does not
definite which degree of burn it is.
Which of the following types of openings in the skeletal system does a "sinus"
describe?
Select one:
a. cavity
b. cleft
,c. hole
d. tunnel - ✔✔ANSWER✔✔-a. cavity: a sinus is an air space within bone.
Which of the following components of the bone matrix, when removed, allows
the bone to be easily shattered?
Select one:
a. cartilage
b. collagen
c. hydroxyapatite
d. mineral - ✔✔ANSWER✔✔-b. Collagen is a component of the bone matrix
that gives it flexible strength so it is less brittle.
Which of the following is the most widely distributed type of muscle in the
body?
Select one:
a. cardiac
b. postural
c. skeletal
d. smooth - ✔✔ANSWER✔✔-d. smooth
Which sentence best describes the sliding filament model of muscle
contraction?
Select one:
a. Actin and myosin filaments remain stationary.
, b. Actin and myosin myofilaments shorten.
c. Sarcomeres and myofibrils contract.
d. Sarcomeres and myofibrils lengthen. - ✔✔ANSWER✔✔-c. Sarcomeres and
myofibrils contract. The shortening of sarcomeres is responsible for
contraction, and thus myofibrils (sarcomeres joined end to end) also shorten
A doctor performing an autopsy on a patient concludes that part of the brain
was likely damaged by trauma due to a large population of which type of cell?
Select one:
a. Schwann cells
b. microglia
c. oligodendrocytes
d. ependymal cells - ✔✔ANSWER✔✔-b. microglia
What type of axons is found in a gray ramus comunicans?
Select one:
a. myelinated, pre-ganglionic axons
b. myelinated, post-ganglionic axons
c. unmyelinated, pre-ganglionic axons
d. unmyelinated, post-ganglionic axons - ✔✔ANSWER✔✔-d. unmyelinated,
post-ganglionic axons
Which class of chemical messengers is secreted by neurons into synaptic clefts
to activate an adjacent cell?
Select one:
