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Daance/ Mod I
Basic Sciences
Question | Answer |
---|---|
The heart is an organ made up of a specialized type of muscle called | The Myocardium (cardiac muscle) |
what is the property called when muscle has the ablitly to contract on its own without stimulation by nerves.? | automaticity |
How many chambers in the heart | 4 |
what are the most superior two chambers of the heart called | atria (singular is atrium) |
the two chambers below the atria are the ? | Ventricles |
which is larger in size , the atria or the ventricles? | Ventricles |
which chamber of the heart is the thicker and more powerful than the others/ | the Left Venticle (it pumps blood to the entire body) |
the right side of the heart has what kind of blood? | Deoxygenated bright red blood |
the right atrium receives blood from what three sources? | above-superior vena cava below-inferior vena cava blood from the veins of the heart itself -coronary sinus. |
All vessels leading away from the heart are called? | Arteris |
All vessels leading to the heart are called ? | Veins |
what vessel does the blood travel through to get to the lungs? | the pulmomary artery |
the Pulmonary artery is the only artery with what? | Oxygen depleated blood |
the blood picks up what in the lungs | Oxygen |
Oxygen returns from the lungs to the heart via what four veins? | Pulmonary veins |
What part of the heart does the pulmonary veins lead to | left atrium. |
where does the blood go after entering the left atrium? | through the mitral valve into the left ventricle. |
During the left venticle contraction, the blood is pumped with the greatest force through the______valve into a very large artery called the _________ and is distributed to the rest of the body via___________circulation. | aortic aorta peripheral |
blood flows in how many directions? | 1 |
heart murmur is what? | back flow or turbulence (mvp-mitral valve prolapse) |
ischemia is? | when the heart cells are weakened but not killed due to reduced oxygen supply |
Angina pectoris means? | "chest Pains" |
Myocardial infarction is also called what? | heart attack |
what is the name of the smallest veins? | venules |
what is the name of the smallest arteries? | capillaries |
what is the main difference between veins and arteries? | Arteries have much thicker walls to handle the pressure of the blood flow in them. |
vasoconstriction is? | when the artery constricts and gets smaller |
vasodilation is? | arteries relax and the size increases |
the pressure of the blood when the heart is pumping is called | Systolic |
the pressure of the blood when the heart is at rest is called | Diastolic |
what is the normal cardiac cycle | also called heartrate ... the normal rate is 60-100 bmp |
accidental arterial puncture produces what type of blood | bright red pulsatile blood |
venipuncture results in what type of blood | steady flow of dark blood |
what are the veins on the back of the hand called | dorsal venous plexus |
what is phlebitis | an inflammation of the vein |
what is the pharynx | the space between the nose and the trachea |
what are the three regions of the pharynx | nasopharynx, oropharynx, laryngopharynx |
where is the laryngopharynx located | directly behind the larynx (or voice box) |
another name for the trachea | windpipe |
what is the diaphragm | a dome shaped muscle that separates the ches cavity form the abdominal cavity. |
what is the most important muscle in inspiration. | diaphragm |
what is the oxygen capacity? | How much oxygen is attached to the hemoglobin |
what is the normal adult respiration rate? | 12-16 respiration per minute at rest |
where are the islets located | pancreas |
what do the islets of langerhans do? | secrete insulin and glucagon |
where are the adrenal glands located? | top of each kidney |
where is the thyroid gland located. | anterior neck |
what is the largest organ in the body? | the liver |
what is the function of the kidneys? | maintain the volume and composition of body fluids. |
in the autonomic nervous system what is A (alpha) | vascoconstrictors |
in the autonomic ner vouse system what is B (beta) | "big organs" |
Beta 1= | Heart |
Beta 2= | lungs |