ANT Chpt 15 & 16 Word Scramble
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Question | Answer |
Which of the following statements describes the pericardium? | It is a two-part membrane that surrounds and protects the heart. |
Which blood vessel delivers deoxygenated blood from the head and neck to the heart? | superior vena cava |
Cardiac muscle fibers | are described by all of the above |
The chordae tendineae and papillary muscles of the heart | help prevent the atrioventricular valves from protruding into the atria when the ventricles contract. |
Which chamber of the heart has the thickest layer of myocardium? | left ventricle |
The normal "pacemaker" of the heart is the | sinoatrial (SA) node |
In normal heart action | the two atria contract together, and then the two ventricles contract together |
Heart sounds are produced by | closure of the heart valves |
Heart rate and strength of contraction are controlled by the cardiovascular center, which is located in the | medulla |
The portion of the ECG that corresponds to atrial depolarization is the | P wave |
The opening of the semilunar valves is due to the pressure in the | ventricles exceeding the prssure in the aorta and pulmonary trunk |
The blood supply to the myocardium is the | coronary circulation |
The Frank-Starling law of the heart | is important in maintaining equal blood output from both ventricles |
Which of the following sequences best represents the parthway of an action potential through the heart's conduction system? | d. 1, 4, 3, 5, 2 |
Which of the following is NOT true concerning ventricular filling during he cardiac cycle? | The semilunar valves are open |
Cardiac output | equals stroke volume (SV) X heart rate (HR) |
Which of the following statements is NOT true? | A drop in blood pressure would cause baroreceptors to stimulate the cardiovascular center to increase parasympathetic impulses |
Sensory receptors that monitor changes in the blood pressure to the brain are | baroreceptors in the carotid arteries |
The blood vessels that allow the exchange of nutrients, wastes, oxygen, and carbon dioxide between the blood and tissue are the | arteries |
Autoregulation is | an ability of a tissue to adjust its blood flow |
Blood flows through the blood vessels because of the | establishment of a pressure gradient |
Which of the following represents pulmonary circulation as the blood flows from the right ventricle? | trunk --> arteries --> capillaries --> veins |
Supplying additional fat tissue with blood may raise blood pressrue because | of an increase in total vessel length |
Filtration of substances out of capillaries occurs when the capillary blood pressure is ___ and blood colloid osmotic pressure is ___. | high, low |
Which of the following pairs of hormones have opposite effects on blood pressure? | ADH, ANP |
Which of the following statements about blood vessels is true? | walls of arteries are generally thicker and contain more elastic tissue than walls of veins |
Why is it important that blood flows slowly through the capillaries? | it permits the efficient exchange of nutrients and wastes between the blood and body cells |
Aldosterone affects blood pressure by | increasing reabsorption of sodium ions and water kidneys |
In a blood pressure reading of 110/70 | 70 represents the pressure of the blood against the arteries during ventricular relaxation |
Which of the following statements is NOT true? | regulation of blood vessel diameter originates from the hypothalamus |
Venous return to the heart is enhanced by all of the following EXCEPT | vasodilation |
valve between the left atrium and left ventricle | biscuspid (mitral) valve |
valve between the right atrium and right ventricle | tricuspid valve |
chamber that pumps blood to the lungs | right ventricle |
chamber that pumps blood into the aorta | left ventricle |
chamber that receives oxygenated blood from lungs | left atrium |
chamber that receives deoxygenated blood from body | right atrium |
valve between the left ventricle and aorta | aortic valve |
valve between right ventricle and pulmonary trunk | pulmonary vavle |
wall between lower heart chambers | interventricular septum |
sac-like structure located on anterior surface of atrium | auricle |
wall between upper heart chambers | interatrial septum |
may cause a heart murmur | valve disorder |
heart compression | cardiac tamponande |
inflammation of heart covering | pericarditis |
heart chamber contraction | systole |
chest pain from ischemia | angina pectoris |
heart attack | myocardial infarction |
heart chamber relaxation | diastole |
Created by:
dtgs2010
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