5 Written Questions
5 Matching Questions
- Atrioventricular Valve (AV)
- Cardioinhibituary center
- Coronary arteries
- Anterior interventricular sulcus
- a is in each atrioventricular canal and is composed of cusps, or flaps.
- b The part that decreases heart rate.
- c One of the arteries that arise from the base of the aorta and carry blood to the muscle of the heart. Exit the aorta just above the point where the aorta leaves the heart and lie within the coronary sulcus
- d The smooth, inner surface of the heart chambers, consists of simple squamous epithelium over a layer of connective tissue. Also covers the surface of the heart valves.
- e is on the anterior surface of the heart. Groove on the anterior surface of the heart, marking the location of the septum between the 2 ventricles.
5 Multiple Choice Questions
- The term dicrotic means- double-beating; when increased pressure caused by recoil is large, a double-pulse can be felt. It is also called the incisura.
- Consists of a plate of fibrous connective tissue between the atria and the ventricles. This connective tissue plate forms fibrous rings around the atrioventricular and the semilunar valves and provides solid support for them, reinforcing the valve openings.
- is an inflammation of the serous pericardium.
- The difference between cardiac output when a person is at rest and maximum cardiac output.
- thick-walled, form the anterior and inferior parts of the heart.
5 True/False Questions
Period of Ejection → The semilunar valves are pushed open, and blood flows from the ventricles into the pulmonary trunk and aorta.
Pacemaker Potential → because cells of the SA node spontaneously generate action potentials at a greater frequency than other cardiac muscle cells, these cells are called ...... of the heart.
Vagus nerves → Either one of the tenth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the pharynx, larynx, heart, and thoracic and abdominal viscera, and of sensory fibers that conduct impulses from these structures to the brain.
Voltage-gated Na+ channels → membrane channels open, bringing about the depolarization phase of the action potential.
15) Visceral Pericardium → ( epicardium) the part covering the heart surface.