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Total questions: 10
Worksheet time: 5mins
What is the primary function of the parathyroid hormone (PTH)?
Stimulate red blood cell production
decrease blood calcium levels
Increase blood calcium levels
Regulate metabolism
The adrenal medulla primarily secretes which of the following hormones in response to stress?
Epinephrine and norepinephrine
Aldosterone and cortisol
Parathyroid hormone and calcitonin
Glucagon and insulin
Which of the following structures contains the "pace-setting" cells of the heart and is responsible for initiating the electrical impulse?
Atrioventricular (AV) node
Purkinje fibers
Sinoatrial (SA) node
Bundle of His
The coronary sinus drains into which of the following heart chambers?
Left atrium
Right atrium
Left ventricle
Right ventricle
Which of the following is the correct location of the left atrioventricular (AV) valve in the heart?
Between the left atrium and the left ventricle
Between the right atrium and the right ventricle
Between the left ventricle and the aorta
Between the right ventricle and the pulmonary trunk
Which of the following structures is primarily responsible for preventing the prolapse of the mitral valve during systole?
Trabeculae carneae
Chordae tendineae
Papillary muscles
Interventricular septum
What is the function of the fossa ovalis in the fetal heart?
It allows blood to bypass the lungs by flowing directly from the right atrium to the left atrium
It provides an opening for blood to flow into the left ventricle
It connects the right and left ventricles to allow mixing of oxygenated and deoxygenated blood
It serves as a conduit for blood to bypass the right atrium and enter the pulmonary trunk
What is the name of the valve located between the right atrium and right ventricle?
Mitral valve
Tricuspid valve
Pulmonary valve
Aortic valve
Which of the following is a correct statement about the aortic valve?
It is located between the left atrium and the left ventricle
It prevents backflow of blood into the left ventricle during diastole
It is located between the right atrium and the right ventricle
It prevents backflow of blood into the right atrium during systole
what is the name of external layer of the heart?
adventitia
pleura
pericardium
peritoneum
