Ivy Tech APHY 201 Exam 3 Questions with Correct Answers

Ivy Tech APHY 201 Exam 3 Questions with Correct Answers


Question 1:
Sympathetic Division
Answer:
....The division of the autonomix nervous system that prepares the body for intense levels of
activity and stress


Question 2:
Transverse Tubules
Answer:
....Rapidly conduct action potentials to the interior of the muscle fiber


Question 3:
Adrenal Medulla
Answer:
....Source of catecholamines, modified sympathetic ganglion, and releases epinephrine and
norepinephrine into the blood


Question 4:
Titin Protein
Answer:
....Stabilize the position of the contractile filaments


Question 5:
Na+ Channel
Answer:
....The binding of ACh to its receptor at the neuromuscular junction causes it to open


Question 6:
Latent Period
Answer:
....The brief period of time between the beginning of the action potential in the muscle and the
beginning of contraction

, Question 7:
High Force Crossbridges Form
Answer:
....Calcium must bind to troponin which moves tropomyosin


Question 8:
Artery
Answer:
....Transports blood away from the heart


Question 9:
Autorhythmic Cells
Answer:
....Are also called the pacemakers because they set the rate of the heartbeat


Question 10:
AV Node
Answer:
....Delays the transmission of the electrical impulses to the ventricles in order for the atria to
finish contracting


Question 11:
Pressure Gradient
Answer:
....Driving force for blood


Question 12:
As blood vessel length increases:
Answer:
....Resistance increases and flow decreases


Question 13:
Starling's Law
Answer:
....The cardiac output is directly related to the venous return