ASU BIO 181 EXAM 3 QUESTIONS WITH ALL CORRECT ANSWERS GRADED A+
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Course
ASU BIO 181
Institution
ASU BIO 181
ASU BIO 181 EXAM 3 QUESTIONS WITH ALL CORRECT ANSWERS GRADED A+
Vitamin D is really a hormone. - Answer-True
Vitamin D is synthesized from cholesterol - 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...
ASU BIO 181 EXAM 3 QUESTIONS
WITH ALL CORRECT ANSWERS
GRADED A+
Vitamin D is really a hormone. - Answer-True
Vitamin D is synthesized from cholesterol - 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? - Answer-Osteoporosis, the
parathyroid hormone released on the thyroid glad has a large role in bone density. Too
much parathyroid hormone causes calcium loss in the urine at the expense of bone.
Where do fats in the body play a role in balance between glucose and glycogen? -
Answer-If there is extra glucose present in a cell the reserve glucose is put in reserve as
glycogen (stored as fat) mainly in the liver and muscle cells to be used at a later time
Insulin is produced by alpha cells. - Answer-False
When the Sympathetic nervous system is triggered glycogen is broken down to glucose
to provide more energy. - Answer-True
The medulla of the adrenal gland produces epinephrine (i.e., adrenaline). - Answer-True
When epinephrine is released it triggers activation of which part of the Autonomic
Nervous System? - Answer-sympathetic
The left ventricle of the heart contains more muscle. - Answer-True
Tidal breathing causes the incoming air to mix with some older air in the lungs. -
Answer-True
The two circuits in the heart and the cardiovascular system have the same blood
pressure. - Answer-False
To prevent back flow of blood in the heart there are __________________. - Answer-
valves
Oxygen is distributed throughout the body by: - Answer-The circulatory system.
, Nutrients and oxygen can leave the arteries and arterioles to reach the cells. - Answer-
False
Blood moves very rapidly in the capillaries. - Answer-False
When oxygen passes from the lungs into the circulatory system as a gas, how many
cells does it have to pass through to be in the circulatory system? - Answer-2. Alveoli
and capillary cells.
The partial pressure of oxygen in the lungs causes it to load into the circulatory system.
- Answer-True
When arterial blood pressure falls the body compensates to raise the blood pressure.
Explain this process. - Answer-The kidneys release renin which activates angiotensin
(makes vessels constrict) which causes arterial pressure to rise
When the ventricles contract blood is pushed out into the artery and the artery stretches
because of its elastic layers allowing the blood to continue to flow into the circulatory
system while the ventricle is relaxing. - Answer-True
Surfactants is one of the later components made in the fetus (prior to birth). - Answer-
True
The excretory system uses oxygen because oxygen diffuses more rapidly into the
excretory system because it contains water in the urine. - Answer-False
The inspiratory and the expiratory reserves make up the total volume in the lungs. -
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. - Answer-alveoli,
surfactant
What does carbonic anhydrase do? - Answer-Makes carbonic acid from water and C02.
When the systole occurs the ventricle is contracting. - Answer-True
The oxygen in the circulatory system functions to bring oxygen to every cell of the body
so it can make ATP. - Answer-True
The heart contains two circuits. Name them. - Answer-Systemic and pulmonary
Veins and venueles have valves in them, but arteries and arterioles do not. - Answer-
True
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