Exam 21: The Cardiovascular System: The Heart

Figure 21.3 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label F.

Norepinephrine release produces an increase in both the heart rate and force of contraction through the stimulation of beta receptors on nodal cells and contractile cells.

Which of the following is a function of the cardiac skeleton of the heart?

Figure 21.5 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label A.

________ is the term used to indicate a heart rate that is slower than normal.

Figure 21.1 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label N.

Which branch(es)of the right coronary artery extends toward the apex along the anterior surface of the right ventricle of the heart?

________ release produces a decrease in both the heart rate and force of contraction through the stimulation of muscarinic receptors on nodal cells and contractile cells.

Figure 21.2 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label B.

Figure 21.1 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label K.

Because cardiac muscles are mechanically, chemically, and electrically connected to one another, cardiac muscle tissue functions like a single enormous muscle cell. For this reason, it is called a functional ________.

The ________ are a series of irregular muscular folds formed on the internal surface of the ventricles.

Figure 21.1 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label A.

Which vessel delivers venous blood from the tissues and organs of the abdominal and pelvic cavities, and from the lower limbs?

Cardiac muscle cells obtain energy almost exclusively through ________.

Figure 21.2 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label L.

Figure 21.5 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label F.

The rapidly depolarizing cells, called pacemaker cells, are found in the ________, which is embedded in the posterior wall of the right atrium.

Figure 21.4 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label I.

Figure 21.2 Using the above figure, identify the labeled structure(s) in each of the following questions. -Identify the structure(s) indicated by Label F.