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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
Human anatomy, exercise physiology, kinesiology, endocrinology, PhysioEx, etc.
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Blood vessels enter and exit from the _____ of the heart.
Blood vessels enter and exit from the _____ of the heart.
Blood vessels enter and exit from the _____ of the heart.
 
  A. apex
  B. base
  C. auricles
  D. trigone
  E. inferior aspect


(Question 2) The function of the pericardial fluid is to
 
daisy1234567   55   2 Replies
6 years ago
Blood flow through the coronary blood vessels decreases during myocardial contraction and increases ...
Blood flow through the coronary blood vessels decreases during myocardial contraction and increases ...
Blood flow through the coronary blood vessels decreases during myocardial contraction and increases during myocardial relaxation.
 
  Indicate whether the statement is true or false.


(Question 2) Which of the followin
jouranngreen108   92   2 Replies
6 years ago
Which blood vessel carries blood from the left ventricle?
Which blood vessel carries blood from the left ventricle?
Which blood vessel carries blood from the left ventricle?
 
  A. aorta
  B. right atrium
  C. pulmonary trunk
  D. pulmonary arteries
  E. pulmonary veins


(Question 2) Which vessels empty blood
SpicyBoi   71   2 Replies
6 years ago
The pacemaker of the heart is the
The pacemaker of the heart is the
The pacemaker of the heart is the
 
  A. right bundle branch.
  B. left bundle branch.
  C. AV node.
  D. SA node.
  E. PM node.


(Question 2) Action potentials pass from one myocardial cell to
VictoriaLenea   69   2 Replies
6 years ago
Which of the following events occurs first?
Which of the following events occurs first?
Which of the following events occurs first?
 
  A. threshold
  B. depolarization
  C. early repolarization
  D. final repolarization
  E. pacemaker potential


(Question 2) The plateau phase seen
artsyyy123   51   3 Replies
6 years ago
When comparing cardiac muscle cells and skeletal muscle cells,
When comparing cardiac muscle cells and skeletal muscle cells,
When comparing cardiac muscle cells and skeletal muscle cells,
 
  A. the rate of action potential propagation is faster in cardiac muscle.
  B. both possess intercalated discs.
  C. only skeletal muscle has a plateau phase in
SpacySmol   55   1 Reply
6 years ago
Contraction of the ventricles is referred to as ventricular
Contraction of the ventricles is referred to as ventricular
Contraction of the ventricles is referred to as ventricular
 
  A. systole.
  B. diastole.
  C. fibrillation.
  D. ischemia.
  E. depolarization.


(Question 2) What cardiac arrhythmia will have
Darkflower73   61   2 Replies
6 years ago
During the ejection phase of the cardiac cycle, blood exits the left ventricle through the
During the ejection phase of the cardiac cycle, blood exits the left ventricle through the
During the ejection phase of the cardiac cycle, blood exits the left ventricle through the
 
  A. aorta.
  B. coronary sinus.
  C. pulmonary vein.
  D. superior vena cava.
  E. pulmonary trunk.


(Qu
swimgal16   71   2 Replies
6 years ago
Mean arterial pressure is (Multiple Choice)
Mean arterial pressure is (Multiple Choice)
Mean arterial pressure is
 
  A. cardiac output times peripheral resistance.
  B. end-diastolic volume minus end-systolic volume.
  C. maximum cardiac output minus cardiac output when at rest.
  D. heart rate times stroke
mireiajordan   105   2 Replies
6 years ago
Stimulation of the heart via the sympathetic nerves would
Stimulation of the heart via the sympathetic nerves would
Stimulation of the heart via the sympathetic nerves would
 
  A. decrease heart rate.
  B. decrease stroke volume.
  C. increase the force of ventricular contraction.
  D. increase end-systolic volume.
  E. not affe
Tamera   74   3 Replies
6 years ago
Excess potassium ions in cardiac tissue cause
Excess potassium ions in cardiac tissue cause
Excess potassium ions in cardiac tissue cause
 
  A. an increased heart rate.
  B. a rapid repolarization of cardiac cells.
  C. a decrease in the frequency of action potentials in the conduction system.
  D. an increase
queeny   216   1 Reply
6 years ago
Calcium-induced calcium release occurs when
Calcium-induced calcium release occurs when
Calcium-induced calcium release occurs when
 
  A.
  calcium from the sarcoplasmic reticulum stimulates the movement of calcium into the cell through the plasma membrane.
 
  B.
  calcium is released from both the sa
Samantha1124   63   2 Replies
6 years ago
A patient has been diagnosed with mild heart disease. Tests show that some of the coronary arteries ...
A patient has been diagnosed with mild heart disease. Tests show that some of the coronary arteries ...
A patient has been diagnosed with mild heart disease. Tests show that some of the coronary arteries are partially occluded. Which of the following is the best course of action to treat the disease?
 
  A.
  Angioplasty
 
 
Dime   31   2 Replies
6 years ago
Which of the following is NOT a pericapillary cell found in capillaries?
Which of the following is NOT a pericapillary cell found in capillaries?
Which of the following is NOT a pericapillary cell found in capillaries?
 
  A. macrophages
  B. neurons
  C. undifferentiated smooth muscle cells
  D. fibroblasts


(Question 2) The exchange of nutrients
Armenb   32   2 Replies
6 years ago
What structure helps to regulate body temperature?
What structure helps to regulate body temperature?
What structure helps to regulate body temperature?
 
  A. glomus
  B. tunic
  C. fenestrae
  D. metarteriole


(Question 2) In a capillary bed, relaxation of the precapillary sphincter
 
  A
phd1100   49   2 Replies
6 years ago
Veins (Multiple Choice)
Veins (Multiple Choice)
Veins
 
  A. carry blood away from the heart.
  B. carry blood under very high pressure.
  C. may contain valves and are lined with endothelium.
  D. are described as strong, rigid vessels that always carry oxygenated blo
buttsuni   57   3 Replies
6 years ago
Systemic circulation (Multiple Choice)
Systemic circulation (Multiple Choice)
Systemic circulation
 
  A. carries blood from the right ventricle to the lungs.
  B. includes all arteries but the veins are part of the pulmonary circulation pathway.
  C. includes the aorta and all of its branches.
  D
timothyy5   45   3 Replies
6 years ago
Which of the following blood vessels supplies blood to the diaphragm?
Which of the following blood vessels supplies blood to the diaphragm?
Which of the following blood vessels supplies blood to the diaphragm?
 
  A. axillary artery
  B. intercostal artery
  C. superior phrenic artery
  D. inferior mesenteric artery
  E. gastric artery


([
Bowhunter522   41   2 Replies
6 years ago
Veins that return blood directly to the heart include the
Veins that return blood directly to the heart include the
Veins that return blood directly to the heart include the
 
  A. brachiocephalic vein.
  B. superior vena cava.
  C. portal vein.
  D. azygos vein.
  E. pulmonary arteries.


(Question 2) The int
Sqwill23   40   2 Replies
6 years ago
Blood from the posterior abdominal wall drains into the
Blood from the posterior abdominal wall drains into the
Blood from the posterior abdominal wall drains into the
 
  A. hepatic portal vein.
  B. inferior vena cava.
  C. ascending lumbar veins.
  D. mesenteric vein.
  E. hepatic vein.


(Question 2) T
jessicakissinge   45   2 Replies
6 years ago
A blood pressure reading of 120/80 would
A blood pressure reading of 120/80 would
A blood pressure reading of 120/80 would
 
  A. indicate a diastolic pressure of 120 mm Hg.
  B. have Korotkoff sounds at pressures above 120 mm Hg.
  C. indicate a systolic pressure of 120 mm Hg.
  D. indicate a systolic
Tamera   71   3 Replies
6 years ago
Which of the following acts as a storage area for blood?
Which of the following acts as a storage area for blood?
Which of the following acts as a storage area for blood?
 
  A. the aorta
  B. the veins
  C. capillaries
  D. arterioles
  E. the arteries


(Question 2) Which type of vessel has the greatest co
Spam839656   33   3 Replies
6 years ago
What creates the pulse? (Multiple Choice)
What creates the pulse? (Multiple Choice)
What creates the pulse?
 
  A. the diastole of the ventricles
  B. ejection of blood from the left ventricle into the aorta
  C. the compliance of the arteries
  D. constriction of the arterioles


(Questi
AlfredDieselGuy   29   3 Replies
6 years ago
In which of the following clinical situations would you expect edema?
In which of the following clinical situations would you expect edema?
In which of the following clinical situations would you expect edema?
 
  A. shock (which is accompanied by low blood pressure)
  B. burns (which result in increased capillary permeability to plasma proteins)
  C. dehydration (
lover   37   2 Replies
6 years ago
When a person rises quickly from a lying position, there is
When a person rises quickly from a lying position, there is
When a person rises quickly from a lying position, there is
 
  A. an increase in the frequency of action potentials produced by the baroreceptors.
  B. an increase in vasomotor sympathetic stimulation to the blood vessels causing va
Dime   24   2 Replies
6 years ago
Hormones from the adrenal medulla
Hormones from the adrenal medulla
Hormones from the adrenal medulla
 
  A. are released in response to parasympathetic stimulation.
  B. cause vasodilation in blood vessels of the skin.
  C. decrease the heart rate.
  D. cause an increase in stroke volume
swimgal16   64   2 Replies
6 years ago
The innermost layer of a blood vessel wall is the tunica _______. (Fill in the blank)
The innermost layer of a blood vessel wall is the tunica _______. (Fill in the blank)
The innermost layer of a blood vessel wall is the tunica _______.
 
  Fill in the blank(s) with the appropriate word(s).


(Question 2) Urine output usually decreases when a person is in shock. This is the result of
Darkflower73   47   3 Replies
6 years ago
Fill in the missing blood vessel. femoral artery; _____________; posterior tibial artery Fill in ...
Fill in the missing blood vessel. femoral artery; _____________; posterior tibial artery Fill in ...
Fill in the missing blood vessel. femoral artery; _____________; posterior tibial artery
 
  Fill in the blank(s) with the appropriate word(s).


(Question 2) Fill in the missing blood vessel. ext. jugular vein; _______
vankor   55   2 Replies
6 years ago
Select the description below that describes pulmonary circulation.
Select the description below that describes pulmonary circulation.
Select the description below that describes pulmonary circulation.
 
  A.
  System of blood vessels that carries blood from the heart to the lungs and back to the right atrium of the heart.
 
  B.
  System of blood v
Tamera   29   2 Replies
6 years ago
How would you describe the streamlined movement of blood through a vessel?
How would you describe the streamlined movement of blood through a vessel?
How would you describe the streamlined movement of blood through a vessel?
 
  A.
  Turbulent flow
 
  B.
  Mercurial flow
 
  C.
  Blood viscosity
 
  D.
  Blood pressure
 
cdsuavet   47   2 Replies
6 years ago
When baroreceptors sense a drop in blood pressure, the vasomotor center responds by:
When baroreceptors sense a drop in blood pressure, the vasomotor center responds by:
When baroreceptors sense a drop in blood pressure, the vasomotor center responds by:
 
  A.
  suppressing cardiac function
 
  B.
  reducing vasomotor tone
 
  C.
  triggering peripheral vasodilation
LU DEE   40   3 Replies
6 years ago
Lymph capillaries are found in the
Lymph capillaries are found in the
Lymph capillaries are found in the
 
  A. epidermis.
  B. cornea.
  C. bone marrow.
  D. central nervous system.
  E. dermis.


(Question 2) The lymphatic system differs from the cardiovascular s
christopher mar   50   3 Replies
6 years ago
Lymphatic tissue contains an interlaced network of reticular fibers that functions to
Lymphatic tissue contains an interlaced network of reticular fibers that functions to
Lymphatic tissue contains an interlaced network of reticular fibers that functions to
 
  A. produce lymphocytes.
  B. produce capsules around lymph nodes.
  C. attack microorganisms.
  D. line the walls of lymphatic vess
buttsuni   54   2 Replies
6 years ago
The only structures that filter lymph is/are the
The only structures that filter lymph is/are the
The only structures that filter lymph is/are the
 
  A. tonsils.
  B. spleen.
  C. lymph nodes.
  D. thymus.


(Question 2) Which of the following statements concerning the spleen is true?
 
christopher mar   48   1 Reply
6 years ago
A surface chemical that prevents microbial growth is
A surface chemical that prevents microbial growth is
A surface chemical that prevents microbial growth is
 
  A. histamine.
  B. leukotriene.
  C. sebum.
  D. kinin.
  E. interferon.


(Question 2) Which of the following characteristics is/are most
MrMiau   35   2 Replies
6 years ago
In a patient experiencing a parasitic worm infection, which of the following immune cells will ...
In a patient experiencing a parasitic worm infection, which of the following immune cells will ...
In a patient experiencing a parasitic worm infection, which of the following immune cells will greatly increase in number?
 
  A. mast cells
  B. eosinophils
  C. monocytes
  D. neutrophils
  E. basophils

[br
roddyrodrod   42   2 Replies
6 years ago
In systemic inflammation, pyrogens (Multiple Choice)
In systemic inflammation, pyrogens (Multiple Choice)
In systemic inflammation, pyrogens
 
  A. decrease phagocytosis.
  B. decrease vasodilation.
  C. increase neutrophil production.
  D. stimulate fever production.
  E. are chemotaxic factors.


(Ques
lover   47   2 Replies
6 years ago
The process of eliminating those lymphocytes that react or respond against self-antigens is called ...
The process of eliminating those lymphocytes that react or respond against self-antigens is called ...
The process of eliminating those lymphocytes that react or respond against self-antigens is called
 
  A. phagocytosis.
  B. inflammation.
  C. negative selection.
  D. activation of complement.
  E. natural selecti
yadwinder   42   2 Replies
6 years ago
Which of the following cytokines is mismatched?
Which of the following cytokines is mismatched?
Which of the following cytokines is mismatched?
 
  A. perforin - makes a hole in target cell membranes
  B. alpha interferon - prevents viral replication
  C. lymphotoxin - costimulator of T cells
  D. interleukin 4 - pl
artsyyy123   38   2 Replies
6 years ago
Antibodies (Multiple Choice)
Antibodies (Multiple Choice)
Antibodies
 
  A. activate antigens.
  B. may initiate inflammation and enhance phagocytosis.
  C. are proteins produced by T helper cells.
  D. are needed for costimulation.
  E. have memory.


(Que
jessicakissinge   34   2 Replies
6 years ago
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