GMS 6440 Quiz Review Questions With Correct Answers
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Course
GMS6401
Institution
GMS6401
GMS 6440 Quiz Review Questions With
Correct Answers
Cardiac muscle contraction is considered to be voluntary movement. - answerFalse, it moves
involuntarily
In the gastrointestinal tract, smooth muscle is enriched. - answerTrue
In our body, approximately 8 liters of intestinal juices are secre...
GMS 6440 Quiz Review Questions With
Correct Answers
Cardiac muscle contraction is considered to be voluntary movement. - answer✔False, it moves
involuntarily
In the gastrointestinal tract, smooth muscle is enriched. - answer✔True
In our body, approximately 8 liters of intestinal juices are secreted into the GI tract daily, but
only 100 ml of water is secreted into the feces. - answer✔True
Normal movement of blood flow in the heart is: left atrium-left ventricle-lung-right atrium-right
ventricle. - answer✔False. Right atrium-right ventricle-lung-left atrium-left ventricle
Normally, humans have 2 lobes in the right lung and 3 lobes in the left lung. - answer✔False. 3
lobes in the right lung and 2 lobes in the left lung.
In the lung, gas exchange occurs mostly at the alveoli. - answer✔True
The urinary system is normally composed of two kidneys, two ureters and two bladders. -
answer✔False. Two kidneys, two ureters and one bladder.
Filtered wastes from the glomerulus will move in the following order: Bowman's capsule-
proximal tubule-distal tubule-loop of Henle-collecting duct. - answer✔False. Bowman's
capsule-proximal tubule- loop of Henle-distal tubule-collecting duct.
Both endocrine and nervous systems play important roles in controlling the activities of many
different organ systems to maintain homeostasis. - answer✔True
Specificity of hormone action in the target cells is determined by receptors. - answer✔True
The area of nerve axon not wrapped by myelin sheath (non-myelinated area) is called nodes of
Ranvier where action potential is insulated. - answer✔False. Myelin sheath insulates action
potential. Action potential propagates faster by skipping myelinated axon, and jumping from
nodes of Ranvier to another node.
What chemical component of the plasma membrane prevents ions from readily and freely
moving across the membrane? - answer✔Lipids (phospholipids)
Across a cell's plasma membrane, movement of water is _______________. - answer✔passive
through a channel
Where is the concentration of [Na+] greater: - answer✔in the extracellular fluid
For a neutrally charged molecule, "Active" transport means that the molecules move across a
membrane: - answer✔from low concentration to high concentration
What molecule is the source of energy for primary active transport to occur? - answer✔ATP
(adenosine triphosphate)
There is only one type of channel in cell membranes. - answer✔False
Regarding primary active transport, solutes move from a compartment of low concentration to a
compartment of high concentration. - answer✔True
Regarding secondary active transport of glucose, the movement of glucose is from a
compartment of high concentration to a compartment of low concentration. - answer✔False
All transport through membrane channels is classified as "Active" transport. - answer✔False
Electrolytes are pumped and leak across cell membranes simultaneously but independently. -
answer✔True
At what point in time does the electrochemical equilibrium potential exist? - answer✔At
equilibrium
What is a major factor that regulates an electrolyte's electrochemical equilibrium potential across
a cell membrane? - answer✔Concentration (chemical) gradient
The electrochemical equilibrium potential for a single highly permeant ion species is controlled
by the concentration gradient. - answer✔True
Movement of a charged electrolyte is determined by the major forces of voltage plus chemical
concentration gradients - answer✔True
The cellular K+ Electrochemical Equilibrium Potential is regulated by concentration differences
across plasma membranes. - answer✔True
Which of these ion choices is primarily responsible for establishing a typical cell membrane's
"resting" potential? - answer✔K+
Excessive extracellular acid (i.e., [H+] ) will raise the concentration of extracellular potassium
ion concentration. - answer✔True
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