PNB 2274 Exam I Practice Questions
and All Correct Answers.
the elbow is _____ to the wrist
a. lateral
b. medial
c. distal
d. proximal - Answer d. proximal
your body temperature rises, this ______ is sensed by _____ and in response information is
carried by ________ to activate the secretion of sweat
a. set point; receptors; the efferent pathway
b. stimulus; receptors; the efferent pathway
c. stimulus; the brain; the afferent pathway
d. set point; receptors; effectors
e. feedback; the brain; receptors - Answer b. stimulus; receptors; the efferent pathway
adipose tissue is different than a tendon due to:
a. the unique combo of proteins present in the ECM
b. the degree of cellularity
c. increased ground substance in the matrix
d. all of the above - Answer d. all of the above
the major categories of tissue are:
a. nervous, musculoskeletal, epithelial, blood
b. blood, bone, muscle, nervous
c. muscle, nervous, connective, epithelial
d. skin, neuromuscular, organ, collagen - Answer c. muscle, nervous, connective, epithelial
a tear in the blood vessel that exposures collagen to blood activates platelets to become sticky
and secrete chemical signals, which cause more platelets to become sticky and secrete the same
chemical signals. this is an example of _____ control
,a. closed loop, negative feedback
b. closed loop, positive feedback
c. feed-forward
d. open-loop, positive feedback - Answer b. closed loop, positive feedback
a cell is taken out of he body and placed into a test solution. the concentration of solute X in the
test solution is 100mM, and the concentration of solute X inside the cell is 200mM. The cell
membrane is permeable to water but not solute X. Which of the following statements is/are
true?
a. there is a net flux of water out of the cell
b. the test solution is hypertonic
c. there is a flux of water molecules into and out of the cell
d. all of the above - Answer c. there is a flux of water molecules into and out of the cell
which is NOT a connective tissue cell
a. bone cells
b. skeletal muscle
c. cartilage cells
d. fat cells
e. blood cells - Answer b. skeletal muscle
which is NOT a feature of connective tissue?
a. protein fibers in the matrix
b. glycosaminoglycan molecules in the matrix
c. cells
d. apical surface - Answer d. apical surface
the most abundant tissue within the body is:
a. muscle
b. connective tissue
c. nervous tissue
d. epithelial tissue - Answer b. connective tissue
, which of the following situations best represents a homeostatic mechanism?
a. a person who becomes very nervous begins to sweat
b. after going outside on a hot day, the core body temp rises
c. after eating large batch of salt popcorn, levels of salt in the urine increase
d. as age increases, the amount of calcium in bones tend to decrease
e. all of the above - Answer c. after eating large batch of salt popcorn, levels of salt in the
urine increase
one of the contributing factor to the onset of cerebrovascular disease is a loss of electrical and
chemical communication between adjacent neurons and glial cells inside the brain. one
potential therapeutic approach might be to design a drug that increases the expression of:
a. desmosomes
b. tight junctions
c. gap junctions.
d. adherens junctions
e. mechanically gated ion channels - Answer c. gap junctions
______ control systems can cause "anticipatory" changes in the body before any change in
blood levels of a regulated variable
a. closed or open loop; negative feedback
b. closed loop, negative feedback
c. open loop
d. closed loop, positive feedback - Answer c. open loop
which of the following tissues are avascular?
a. cartilage
b. bone
c. both
d. neither - Answer a. cartilage
the bacteria responsible for food poisoning secrete a toxin that breaks down intercellular
junction between cells in your digestive system, allowing them to enter your tissues and make
you sick. this toxin should allow the bacteria to enter
and All Correct Answers.
the elbow is _____ to the wrist
a. lateral
b. medial
c. distal
d. proximal - Answer d. proximal
your body temperature rises, this ______ is sensed by _____ and in response information is
carried by ________ to activate the secretion of sweat
a. set point; receptors; the efferent pathway
b. stimulus; receptors; the efferent pathway
c. stimulus; the brain; the afferent pathway
d. set point; receptors; effectors
e. feedback; the brain; receptors - Answer b. stimulus; receptors; the efferent pathway
adipose tissue is different than a tendon due to:
a. the unique combo of proteins present in the ECM
b. the degree of cellularity
c. increased ground substance in the matrix
d. all of the above - Answer d. all of the above
the major categories of tissue are:
a. nervous, musculoskeletal, epithelial, blood
b. blood, bone, muscle, nervous
c. muscle, nervous, connective, epithelial
d. skin, neuromuscular, organ, collagen - Answer c. muscle, nervous, connective, epithelial
a tear in the blood vessel that exposures collagen to blood activates platelets to become sticky
and secrete chemical signals, which cause more platelets to become sticky and secrete the same
chemical signals. this is an example of _____ control
,a. closed loop, negative feedback
b. closed loop, positive feedback
c. feed-forward
d. open-loop, positive feedback - Answer b. closed loop, positive feedback
a cell is taken out of he body and placed into a test solution. the concentration of solute X in the
test solution is 100mM, and the concentration of solute X inside the cell is 200mM. The cell
membrane is permeable to water but not solute X. Which of the following statements is/are
true?
a. there is a net flux of water out of the cell
b. the test solution is hypertonic
c. there is a flux of water molecules into and out of the cell
d. all of the above - Answer c. there is a flux of water molecules into and out of the cell
which is NOT a connective tissue cell
a. bone cells
b. skeletal muscle
c. cartilage cells
d. fat cells
e. blood cells - Answer b. skeletal muscle
which is NOT a feature of connective tissue?
a. protein fibers in the matrix
b. glycosaminoglycan molecules in the matrix
c. cells
d. apical surface - Answer d. apical surface
the most abundant tissue within the body is:
a. muscle
b. connective tissue
c. nervous tissue
d. epithelial tissue - Answer b. connective tissue
, which of the following situations best represents a homeostatic mechanism?
a. a person who becomes very nervous begins to sweat
b. after going outside on a hot day, the core body temp rises
c. after eating large batch of salt popcorn, levels of salt in the urine increase
d. as age increases, the amount of calcium in bones tend to decrease
e. all of the above - Answer c. after eating large batch of salt popcorn, levels of salt in the
urine increase
one of the contributing factor to the onset of cerebrovascular disease is a loss of electrical and
chemical communication between adjacent neurons and glial cells inside the brain. one
potential therapeutic approach might be to design a drug that increases the expression of:
a. desmosomes
b. tight junctions
c. gap junctions.
d. adherens junctions
e. mechanically gated ion channels - Answer c. gap junctions
______ control systems can cause "anticipatory" changes in the body before any change in
blood levels of a regulated variable
a. closed or open loop; negative feedback
b. closed loop, negative feedback
c. open loop
d. closed loop, positive feedback - Answer c. open loop
which of the following tissues are avascular?
a. cartilage
b. bone
c. both
d. neither - Answer a. cartilage
the bacteria responsible for food poisoning secrete a toxin that breaks down intercellular
junction between cells in your digestive system, allowing them to enter your tissues and make
you sick. this toxin should allow the bacteria to enter
