This fascicle shape is a circular arrangement that surrounds body openings and allows voluntary control over urination/defecation.

This muscle naming term means "jagged" appearance (like a saw).

The antagonist of the brachialis is the:

When the posterior neck muscles balance the weight of the head along the atlanto-occipital joint, this is an example of a:

This muscle raises the eyebrows

This extrinsic eye muscle rotates the eyeball upward and toward the lateral side of the orbit

What is the action of the masseter muscle?

Working together, these muscles flex the head. Individually, they flex and rotate the head to the opposite side. They also function as accessory muscles of inspiration.

Which of the following elevates the rib cage assisting in inspiration?

Which of the following does not move the scapula?

This muscle rotates the forearm so the palm faces posteriorly (in anatomical position).

Which muscle is not part of the quadriceps femoris that extend the leg at the knee?

Which is the most medial hamstring (that extends the thigh and flexes the leg)?

Which is NOT a function of the muscular system?

Which is TRUE about skeletal muscle and cardiac muscle?

The myocyte's plasma membrane is called the:

The sarcoplasmic reticulum (SR) surrounding myofibrils stores and releases what ion?

Tropomyosin is a component of what type of filament?

This is the functional unit of contraction in the myofibril.

When the sarcomere contracts, which area DOES NOT narrow?

During depolarization, what ion moves into the cell?

During repolarization, what ion moves out of the cell?

The end plate potential is generated by the influx of _____ into the motor end plate.

Acetylcholine is released from the synaptic terminus in response to

The term "synaptic cleft" refers to

The term "propagate" when referring to an action potential means

In order to trigger a muscle contraction, an action potential must reach the

A triad consists of

____is released from the SR in response to arrival of an action potential

Tropomyosin

Troponin has three subunits. Which of the following does NOT bind to one of these subunits?

The power stroke

During muscle fiber relaxation

Sarcolemma repolarization during relaxation

Which substance found in the myocyte can generate enough ATP for about 10 seconds of maximum muscle activity

Which type of skeletal muscle fibers are used for sprinting!

The superior chambers of the heart are called:

Blood in the pulmonary vein is:

The heart is also an endocrine organ, secreting which of the following hormones to lower blood pressure?

The superior and inferior vena cavae empty into which heart chamber?

This great vessel supplies the entire systemic circuit with oxygenated blood.

An insufficient mitral (bicuspid) valve would allow the backflow of blood into the:

The left and right coronary arteries receive blood from the:

The medical term for heart attack is:

Which of the following pacemaker cell populations has the fastest intrinsic rate of depolarization (60+ pm)?

Which wave on the electrocardiogram (ECG) represents atrial depolarization?

Which wave on the electrocardiogram (ECG) represents ventricular depolarization?

Which wave on the electrocardiogram (ECG) represents ventricular repolarization?

This is also known as the heartrate.

This segment/interval shows depressions or elevations during myocardial ischemia and myocardial infarction.

A flat-line rhythm strip is also called...

Heart rate above 100 bpm is called...

S2 can be auscultated via stethoscope when the following occurs.

The contraction portion of the cardiac cycle is called:

How do you calculate cardiac output?

Agents that affect contractility are known as agents.

When your body temperature rises, skin blood vessels:

Which of the following is composed of endothelium?

Where are baroreceptors located?

At any given moment, most of the body's blood can be found in:

Which has the thickest tunica media?

Locations where vessels connect via pathways called collateral vessels are called

If blood volume goes down, blood pressure will likely:

Diastolic blood pressure averages around

Which of the following is NOT assisting in venous return

The effects of epinephrine / norepinephrine on the cardiovascular system include all of the following EXCEPT:

An athlete checks their pulse via this artery in the neck.