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ASU BIO 181 EXAM 3 NEWEST EXAM AND STUDY GUIDE QUESTIONS AND CORRECT ANSWERS | A+ GRADE
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ASU BIO 181 EXAM 3 NEWEST EXAM AND STUDY GUIDE QUESTIONS AND CORRECT ANSWERS | A+ GRADE
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ASU BIO 181 EXAM 3 NEWEST EXAMAND STUDY GUIDE QUESTIONS AND
CORRECT ANSWERS 2024 -2025 | A+
GRADE
When epinephrine is released it triggers activation of
which part of the Autonomic Nervous System? Correct
Answer sympathetic nervous system
Where do fats in the body play a role in balance between
glucose and glycogen? Correct Answer When blood
glucose levels fall, the pancreas stops releasing insulin,
and cells switch to using glycogen and fat for energy
When the Sympathetic nervous system is triggered
glycogen is broken down to glucose to provide more
energy. Correct Answer TRUE
Insulin is a ligand. Correct Answer TRUE
Your mom came back from her medical appointment and
said that the M.D. told her she had low bone density. What
medical problem could this cause and what
hormones/endocrine glands in the body are involved?
Correct Answer Medical Problem: Osteoporosis, muscle
spasms and even seizures.Hormones: PTH and Vitamin
DGland: Parathyroid
,Vitamin D causes the parathyroid to inhibit new PTH
synthesis. Correct Answer TRUE
What could the stress of taking an exam do to your
glucose levels in various parts of the body? Correct
Answer Production of adrenalin recruits glucose into the
blood from liver and muscle glycogen stores and stops
glycogen synthesis.
Vitamin D is synthesized from cholesterol Correct Answer
TRUE
Explain how insulin and glucagon regulate the balance
(i.e, homeostasis) between glycogen and glucose when
epinephrine (i.e., adrenalin) is not involved. Correct
Answer - blood glucose rises
-> b-cells of pancreas release insulin
-> insulin stimulates cells to use glucose and convert
glucose to glycogen and fat
- blood glucose falls
-> pancreas stops releasing insulin
-> cells use glycogen and fat for energy
- blood glucose falls too low
-> a-cells release glucagon
-> glucagon stimulates liver to convert glycogen back to
glucose
The medulla of the adrenal gland produces epinephrine
(i.e., adrenaline). Correct Answer TRUE
,The Parasympathetic Nervous System is triggered is
trigger to act by exposure to epinephrine. Correct Answer
FALSE
Insulin is produced by alpha cells. Correct Answer FALSE
Vitamin D is really a hormone. Correct Answer TRUE
Red blood cells carry CO2 back to the lungs. Correct
Answer FALSE
Blood moves very rapidly in the capillaries. Correct
Answer FALSE
One of the problems with the increased surface area of
the lungs is that the __________________ could stick to
each other causing the lungs to collapse. To get around
this the body secretes __________________ into the
lungs. Correct Answer alveoli, surfactant
What does carbonic anhydrase do? Correct Answer
Converts CO2 and H2O into H2CO3...carbonic acid, which
is eventually broken down bicarbonate and hydrogen ions
When the diaphragm is relaxed, it allows air to leave the
lungs including the residual volume. Correct Answer
FALSE
The excretory system uses oxygen because oxygen
diffuses more rapidly into the excretory system because it
contains water in the urine. Correct Answer FALSE
, The slow flow of blood in the capillaries facilitates the
production of bicarbonates in the blood. Correct Answer
TRUE
Draw a cross-section of an artery or arteriole and label the
layers. Correct Answer
The heart contains two circuits. Name them. Correct
Answer pulmonary circuit and systemic circuit
The heart pace maker that triggers the two atria to
contract is the __________________
__________________. Correct Answer sinoatrial node
When the systole occurs the ventricle is contracting.
Correct Answer TRUE
Surfactants is one of the later components made in the
fetus (prior to birth). Correct Answer TRUE
The partial pressure of oxygen in the lungs causes it to
load into the circulatory system. Correct Answer TRUE
Tidal breathing causes the incoming air to mix with some
older air in the lungs. Correct Answer TRUE
To prevent back flow of blood in the heart there are
__________________. Correct Answer valves
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