BIO 446L EXAM 4 WITH COMPLETE SOLUTIONS!!
What is a function of the papillary muscle?
It allows an electrical signal to continue through the heart.
Holds the cusps in the proper position to prevent backflow of blood into the atria.
The first point in the heart that begins the contraction that pumps blood out of the left
None of the above. - ANSWER>>Holds the cusps in the proper position to prevent
backflow of blood into the atria.
The autonomic innervation of the cardiovascular system includes important receptors.
Which of the following is correct?
Baroreceptors, sense changes in tension, or pressure of blood flow in the vessels.
Baroreceptors, sense changes in CO2 and O2 content of the blood.
Chemoreceptors, sense changes in tension, or pressure of blood flow in the vessels.
None of the above. - ANSWER>>Baroreceptors, sense changes in tension, or pressure
of blood flow in the vessels.
Blood flowing through a vein across the neck normally flows into the superior vena cava
and into the right atrium. If there is a back up of blood flow in this vein, what would you
expect to occur to this individual?
Distension (swelling) of an external jugular vein
The right side of the heart would be affected
Pulmonary circulation is affected
All of the above - ANSWER>>All of the above
Which atrium is thicker, and why?
Left atrium, pumps blood to the entire body.
Right atrium, pumps blood to the entire body.
, The left and right atrium wall actually has the same thickness. - ANSWER>>Left atrium,
pumps blood to the entire body.
What is the effect of the Vagus nerve on the heart?
Parasympathetic
Sympathetic - ANSWER>>Parasympathetic
A portal system is associated with the following components:
Primary artery, portal vein, secondary artery
Primary capillary plexus, primary central artery, portal vein
Primary capillary plexus, secondary capillary plexus, portal artery
Primary capillary plexus, secondary capillary plexus, portal vein - ANSWER>>Primary
capillary plexus, secondary capillary plexus, portal vein
The first vessel to branch off the aorta is the
Brachiocephalic trunk
Coronary artery
Left common carotid
Left subclavian - ANSWER>>Coronary artery
The following relate to the hypothalamic hypophyseal portal system:
Primary artery, portal vein, secondary artery
Primary capillary plexus, primary central artery, portal vein
Primary capillary plexus, secondary capillary plexus, portal artery
Primary capillary plexus, secondary capillary plexus, portal vein - ANSWER>>Primary
capillary plexus, secondary capillary plexus, portal vein
Which of the following is the best description for the term "Pericytes"?
What is a function of the papillary muscle?
It allows an electrical signal to continue through the heart.
Holds the cusps in the proper position to prevent backflow of blood into the atria.
The first point in the heart that begins the contraction that pumps blood out of the left
None of the above. - ANSWER>>Holds the cusps in the proper position to prevent
backflow of blood into the atria.
The autonomic innervation of the cardiovascular system includes important receptors.
Which of the following is correct?
Baroreceptors, sense changes in tension, or pressure of blood flow in the vessels.
Baroreceptors, sense changes in CO2 and O2 content of the blood.
Chemoreceptors, sense changes in tension, or pressure of blood flow in the vessels.
None of the above. - ANSWER>>Baroreceptors, sense changes in tension, or pressure
of blood flow in the vessels.
Blood flowing through a vein across the neck normally flows into the superior vena cava
and into the right atrium. If there is a back up of blood flow in this vein, what would you
expect to occur to this individual?
Distension (swelling) of an external jugular vein
The right side of the heart would be affected
Pulmonary circulation is affected
All of the above - ANSWER>>All of the above
Which atrium is thicker, and why?
Left atrium, pumps blood to the entire body.
Right atrium, pumps blood to the entire body.
, The left and right atrium wall actually has the same thickness. - ANSWER>>Left atrium,
pumps blood to the entire body.
What is the effect of the Vagus nerve on the heart?
Parasympathetic
Sympathetic - ANSWER>>Parasympathetic
A portal system is associated with the following components:
Primary artery, portal vein, secondary artery
Primary capillary plexus, primary central artery, portal vein
Primary capillary plexus, secondary capillary plexus, portal artery
Primary capillary plexus, secondary capillary plexus, portal vein - ANSWER>>Primary
capillary plexus, secondary capillary plexus, portal vein
The first vessel to branch off the aorta is the
Brachiocephalic trunk
Coronary artery
Left common carotid
Left subclavian - ANSWER>>Coronary artery
The following relate to the hypothalamic hypophyseal portal system:
Primary artery, portal vein, secondary artery
Primary capillary plexus, primary central artery, portal vein
Primary capillary plexus, secondary capillary plexus, portal artery
Primary capillary plexus, secondary capillary plexus, portal vein - ANSWER>>Primary
capillary plexus, secondary capillary plexus, portal vein
Which of the following is the best description for the term "Pericytes"?
