BIO 169 Exam 2024: The Cardiovascular System-
Questions Solved 100% Correct |Verified Solutions
Because of ____, the myocardium behaves as a functional syncytium. - ✔✔gap junctions
True or False: Parts of the heart can contract while other part are relaxed. - ✔✔False
True or False: Cardiac muscle cells are not self-excitable. - ✔✔False
The ____ will allow the heart to continue beating even if all nerve connections to the heart are
severed. - ✔✔intrinsic conduction system
The ____ is located on the right atrial wall, and is responsible for setting the pace of the heart
rhythm. - ✔✔sinoatrial node
True or False: The atrioventricular bundle is the only electrical connection between the atria
and ventricles. - ✔✔True
Depolarization moves across the heart ____. - ✔✔in a wave
The cardiac centers are located in the ____. - ✔✔medulla oblongata
The ____ nervous system increases both the rate and force of heartbeat. -
✔✔parasympathetic
The ____ center sends inhibiting impulses to the heart via the vagus nerves. -
✔✔cardioinhibitory center
, Electrical currents in the heart can be monitored with a(n) ____. - ✔✔ECG
____ refers to the relaxation phase of heart activity. - ✔✔Diastolic
Heart sounds are associated with the ____. - ✔✔closing of the heart valves
____ is the amount of blood pumped out of each ventricle in one minute. - ✔✔stroke
volume
The walls of the blood vessels are composed of ____ tunics. - ✔✔three
The tunics surround a central blood-containing space called the ____. - ✔✔lumen
The innermost tunic is the ____. - ✔✔tunica intima
Smooth muscle cells are found in the ____. - ✔✔tunica media
The ____ nourishes the external tissues of the blood vessels. - ✔✔vasa vasorum
____ transport blood away from the heart. - ✔✔Arteries
The ____ expand and recoil passively to accommodate changes in blood volume, thus keeping
blood under pressure. - ✔✔elastic arteries
____ are the smallest blood vessels. - ✔✔Capillaries
The ____ provide direct access to nearly every cell in the body. - ✔✔capillaries
Questions Solved 100% Correct |Verified Solutions
Because of ____, the myocardium behaves as a functional syncytium. - ✔✔gap junctions
True or False: Parts of the heart can contract while other part are relaxed. - ✔✔False
True or False: Cardiac muscle cells are not self-excitable. - ✔✔False
The ____ will allow the heart to continue beating even if all nerve connections to the heart are
severed. - ✔✔intrinsic conduction system
The ____ is located on the right atrial wall, and is responsible for setting the pace of the heart
rhythm. - ✔✔sinoatrial node
True or False: The atrioventricular bundle is the only electrical connection between the atria
and ventricles. - ✔✔True
Depolarization moves across the heart ____. - ✔✔in a wave
The cardiac centers are located in the ____. - ✔✔medulla oblongata
The ____ nervous system increases both the rate and force of heartbeat. -
✔✔parasympathetic
The ____ center sends inhibiting impulses to the heart via the vagus nerves. -
✔✔cardioinhibitory center
, Electrical currents in the heart can be monitored with a(n) ____. - ✔✔ECG
____ refers to the relaxation phase of heart activity. - ✔✔Diastolic
Heart sounds are associated with the ____. - ✔✔closing of the heart valves
____ is the amount of blood pumped out of each ventricle in one minute. - ✔✔stroke
volume
The walls of the blood vessels are composed of ____ tunics. - ✔✔three
The tunics surround a central blood-containing space called the ____. - ✔✔lumen
The innermost tunic is the ____. - ✔✔tunica intima
Smooth muscle cells are found in the ____. - ✔✔tunica media
The ____ nourishes the external tissues of the blood vessels. - ✔✔vasa vasorum
____ transport blood away from the heart. - ✔✔Arteries
The ____ expand and recoil passively to accommodate changes in blood volume, thus keeping
blood under pressure. - ✔✔elastic arteries
____ are the smallest blood vessels. - ✔✔Capillaries
The ____ provide direct access to nearly every cell in the body. - ✔✔capillaries
