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of 156 available terms
(2 exact duplicates found)

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5 Written questions

5 Matching questions

  1. Voltage-gated K+ channels
  2. Cardioinhibituary center
  3. Posterior interventricular sulcus
  4. Serous Pericardium
  5. Absolute refractory period
  1. a The part that decreases heart rate.
  2. b is on the posterior surface of the heart. Groove on the diaphragmatic surface of the heart, marking the location of the septum between the 2 ventricles.
  3. c A thin, transparent, inner layer of simple squamous epithelium.
  4. d The Cardiac muscle cell is completely insensitive to further stimulation. Portion of the action potential during which the membrane is insensitive to all stimuli, regardless of their strength.
  5. e Several types exist, each of which opens and closes at different membrane potentials, causing changes in membrane permeability to K+.

5 Multiple choice questions

  1. 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.
  2. is composed of 3 individual waves: Q, R, and S waves. It results from ventricular depolarization and signals the onset of ventricular contraction.
  3. is a surgical procedure performed on valves that are so deformed and scarred from conditions such as endocarditis that they have become severely incompetent or stenosed.
  4. Phase of the action potential in which the membrane potential moves from its maximum degree of depolarization toward the value of the resting membrane potential.
  5. is a surgical procedure in which the heart of a recently decreased donor is transplanted to the recipient, and the recipient's diseased heart is removed.

5 True/False questions

  1. Voltage-gated Na+ channelsmembrane channels open, bringing about the depolarization phase of the action potential.


  2. NitroglycerinCauses dilation of all the veins and arteries, including coronary arteries, without an increase in heart rate or stroke.


  3. Pulmonary Trunkbranches from the pulmonary trunk, which carry blood to the lungs, where carbon dioxide is released and oxygen is picked up.


  4. Fibrous PericardiumA thin, transparent, inner layer of simple squamous epithelium.


  5. Angioplastyis a process whereby a surgeon threads a small balloon, usually into the femoral artery, through the aorta, and into a coronary artery. After entering the partially occluded coronary artery, the balloon is inflated, flattening the atherosclerotic deposits against the vessel walls and opening the occluded blood vessel.