BIO 181 ASU EXAMINATION QUESTIONS
WITH REVISED AND UPDATED
ANSWERS
T/F Vitamin D is synthesized from cholesterol. - Answer-True
T/F When the Sympathetic nervous system is triggered glycogen is broken down to
glucose to provide more energy. - Answer-True
T/F Vitamin D is really a hormone. - Answer-True
T/F Vitamin D causes the parathyroid to inhibit new PTH synthesis. - Answer-True
T/F Insulin is produced by alpha cells. - Answer-False
T/F Insulin is a ligand. - 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. - Answer-
Insulin is released when glucose is present in the blood and glycogen is released when
no glucose is present in the blood and the pancreas makes both for cells to
continuously make ATP.
When epinephrine is released it triggers activation of which part of the Autonomic
Nervous System? - Answer-Sympathetic
What could the stress of taking an exam do to your glucose levels in various parts of the
body? - Answer-The stress could cause the sympathetic nervous system to kick in and
increase glucose into the blood.
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.
There is a reserve of oxygen in the muscles held by __________________. - Answer-
myoglobin
T/F When the diaphragm is relaxed, it allows air to leave the lungs including the residual
volume. - Answer-False
The lungs are in the thoracic cavity, but they are also in another cavity. What is the
name of that other cavity? - Answer-Pleural Cavity
, Oxygen is distributed throughout the body by:
- the immune system
- the circulatory system
- the endocrine system
- the digestive system
- the excretory system - Answer-the circulatory system
The heart contains two circuits. Name them. - Answer-Pulmonary and systematic
When you inhale which set of muscles uses the least amount of ATP and triggers the
parasympathetic nervous system? - Answer-External intercostal muscles
T/F The excretory system uses oxygen because oxygen diffuses more rapidly into the
excretory system because it contains water in the urine. - Answer-False
The heart pace maker that triggers the two atria to contract is the __________________
__________________. - Answer-Sinoatrial node
T/F Blood moves very rapidly in the capillaries. - Answer-False
T/F Red blood cells carry CO2 back to the lungs. - Answer-False
T/F 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
T/F The atrioventricular node fires after the sinoatrial node. - Answer-True
T/F Unlike other epithelia the epithelia that make up the capillaries have holes in them
called fenestrations. - Answer-True
T/F In mammals ventilation is tidal. - Answer-True
T/F The partial pressure of oxygen in the lungs causes it to load into the circulatory
system. - Answer-True
What does carbonic anhydrase do? - Answer-Speeds up conversion of CO2 and
H2CO3
T/F The slow flow of blood in the capillaries facilitates the production of bicarbonates in
the blood. - Answer-True
What is the maximum number of molecules of oxygen that can bind to hemoglobin? -
Answer-4
WITH REVISED AND UPDATED
ANSWERS
T/F Vitamin D is synthesized from cholesterol. - Answer-True
T/F When the Sympathetic nervous system is triggered glycogen is broken down to
glucose to provide more energy. - Answer-True
T/F Vitamin D is really a hormone. - Answer-True
T/F Vitamin D causes the parathyroid to inhibit new PTH synthesis. - Answer-True
T/F Insulin is produced by alpha cells. - Answer-False
T/F Insulin is a ligand. - 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. - Answer-
Insulin is released when glucose is present in the blood and glycogen is released when
no glucose is present in the blood and the pancreas makes both for cells to
continuously make ATP.
When epinephrine is released it triggers activation of which part of the Autonomic
Nervous System? - Answer-Sympathetic
What could the stress of taking an exam do to your glucose levels in various parts of the
body? - Answer-The stress could cause the sympathetic nervous system to kick in and
increase glucose into the blood.
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.
There is a reserve of oxygen in the muscles held by __________________. - Answer-
myoglobin
T/F When the diaphragm is relaxed, it allows air to leave the lungs including the residual
volume. - Answer-False
The lungs are in the thoracic cavity, but they are also in another cavity. What is the
name of that other cavity? - Answer-Pleural Cavity
, Oxygen is distributed throughout the body by:
- the immune system
- the circulatory system
- the endocrine system
- the digestive system
- the excretory system - Answer-the circulatory system
The heart contains two circuits. Name them. - Answer-Pulmonary and systematic
When you inhale which set of muscles uses the least amount of ATP and triggers the
parasympathetic nervous system? - Answer-External intercostal muscles
T/F The excretory system uses oxygen because oxygen diffuses more rapidly into the
excretory system because it contains water in the urine. - Answer-False
The heart pace maker that triggers the two atria to contract is the __________________
__________________. - Answer-Sinoatrial node
T/F Blood moves very rapidly in the capillaries. - Answer-False
T/F Red blood cells carry CO2 back to the lungs. - Answer-False
T/F 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
T/F The atrioventricular node fires after the sinoatrial node. - Answer-True
T/F Unlike other epithelia the epithelia that make up the capillaries have holes in them
called fenestrations. - Answer-True
T/F In mammals ventilation is tidal. - Answer-True
T/F The partial pressure of oxygen in the lungs causes it to load into the circulatory
system. - Answer-True
What does carbonic anhydrase do? - Answer-Speeds up conversion of CO2 and
H2CO3
T/F The slow flow of blood in the capillaries facilitates the production of bicarbonates in
the blood. - Answer-True
What is the maximum number of molecules of oxygen that can bind to hemoglobin? -
Answer-4
