Bios 255 Midterm/Finals EXAM
QUESTIONS AND VERIFIED
CORRECT ANSWERS LATEST
2026-2027
Venous reserve is used during extreme blood loss. True or False - CORRECT ANSWER-True
Chemoreceptors are found in what? - CORRECT ANSWER-Aortic Bodies
Venous valves allow blood to flow in BOTH directs. True or False. - CORRECT ANSWER-False
The normal heart sounds are caused by what? - CORRECT ANSWER-The closure of the heart
valves
The left ventricular wall of the heart is much thicker than the right wall in order to do what? -
CORRECT ANSWER-Pump blood against a greater pressure
Ventricular depolarization corresponds to what complex? - CORRECT ANSWER-QRS Complex
Blood within the pulmonary veins returns to the heart in what location? - CORRECT ANSWER-
Left Atrium
When the heart rate is at 75, the duration of one cardiac cycle is how long? - CORRECT
ANSWER-0.8 seconds
, Cardiac muscle cells are like skeletal muscle cells in that they all have what? - CORRECT
ANSWER-Striation
The ascending aorta is connected to the - CORRECT ANSWER-Left Ventricle
If the vagus nerve is severed, the result would be that - CORRECT ANSWER-The heart rate will
increase
The mitral valve is closed during what? - CORRECT ANSWER-During ventricular diastole
What will increase the contractility of the heart muscle? - CORRECT ANSWER-Thyroxin,
Epinephrine, & Sympathetic Stimuli
An abnormally fast heart rate is called - CORRECT ANSWER-Tachycardia
The specialized tissue in the heart muscle that conducts the ventricular depolarization are the -
CORRECT ANSWER-Purkinje fibers
The circulatory needs of the heart muscle is provided by - CORRECT ANSWER-the coronary
arteries
Blood within the vena cava returns to the heart at the - CORRECT ANSWER-Right atrium
Cardiac muscle cells are unlike skeletal muscle cells in that they do not have - CORRECT
ANSWER-Tetanic Contractions
The pulmonary trunk is connected to the - CORRECT ANSWER-Right Ventricle
QUESTIONS AND VERIFIED
CORRECT ANSWERS LATEST
2026-2027
Venous reserve is used during extreme blood loss. True or False - CORRECT ANSWER-True
Chemoreceptors are found in what? - CORRECT ANSWER-Aortic Bodies
Venous valves allow blood to flow in BOTH directs. True or False. - CORRECT ANSWER-False
The normal heart sounds are caused by what? - CORRECT ANSWER-The closure of the heart
valves
The left ventricular wall of the heart is much thicker than the right wall in order to do what? -
CORRECT ANSWER-Pump blood against a greater pressure
Ventricular depolarization corresponds to what complex? - CORRECT ANSWER-QRS Complex
Blood within the pulmonary veins returns to the heart in what location? - CORRECT ANSWER-
Left Atrium
When the heart rate is at 75, the duration of one cardiac cycle is how long? - CORRECT
ANSWER-0.8 seconds
, Cardiac muscle cells are like skeletal muscle cells in that they all have what? - CORRECT
ANSWER-Striation
The ascending aorta is connected to the - CORRECT ANSWER-Left Ventricle
If the vagus nerve is severed, the result would be that - CORRECT ANSWER-The heart rate will
increase
The mitral valve is closed during what? - CORRECT ANSWER-During ventricular diastole
What will increase the contractility of the heart muscle? - CORRECT ANSWER-Thyroxin,
Epinephrine, & Sympathetic Stimuli
An abnormally fast heart rate is called - CORRECT ANSWER-Tachycardia
The specialized tissue in the heart muscle that conducts the ventricular depolarization are the -
CORRECT ANSWER-Purkinje fibers
The circulatory needs of the heart muscle is provided by - CORRECT ANSWER-the coronary
arteries
Blood within the vena cava returns to the heart at the - CORRECT ANSWER-Right atrium
Cardiac muscle cells are unlike skeletal muscle cells in that they do not have - CORRECT
ANSWER-Tetanic Contractions
The pulmonary trunk is connected to the - CORRECT ANSWER-Right Ventricle
