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31 Cards in this Set
- Front
- Back
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What happens when your metabolism increases? |
More heat is produced causing fever |
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Pathogens that raises body temperature? |
Pyrogens |
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The rate at which heat is produced when the body is resting? |
Basal metabolic rate (BMR) |
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What regulates the body temperature? |
Hypothalamus |
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Hormones that affect metabolic rate? |
Testosterone Epinephrine Norepinephrine |
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When body temperature rises the hypothalamus send out a signal through the nervous system that causes? |
Vasodilation, sweating and inhibition of heat production |
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What does the hypothalamus do when the body temperature drops? |
Vasoconstriction of surface blood vessels to conserve heat and inducing shivering to cause heat production |
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When does heat loss occurs? |
Exposure to the environment |
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What are the factors that causes heat loss through exposure? |
Radiation Conduction Convection Evaporation |
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Another word for fever? |
Pyrexia |
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What is the actual body temperature for pyrexia? |
100.2 degrees Fahrenheit 37.9 degrees Celsius |
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Excessive sweat production which attempts to cool the body by evaporation? |
Diaphoresis |
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Insufficient oxygen is called? |
Hypoxia |
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Insufficient oxygen to the brain? |
Cerebral hypoxia |
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Points in the body where a pulse can be felt |
Temporal Carotid Apical Brachial Radial Femoral Popliteal Posterior tibial Dorsalis pedis |
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What produces a pulse? |
Cardiac contractions |
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Where do you feel the pressure wave from the aorta? |
Peripheral artery - the pulse points |
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What initiates cardiac contractions? |
Electrical impulse from the SA node in the right atrium |
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Pulse rate is affected by? |
Electrical conduction in the heart - SA NODE |
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When the heart contracts how much blood is pumped into the aorta? |
60 - 70 ml |
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What is stroke volume? |
Volume of blood pushed into the aorta with each heartbeat |
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If your stroke volume is low how does it affect your pulse? |
Pulse will be low as well |
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What is cardiac output? |
The amount of blood pumped by the left ventricle in one minute |
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What is the average cardiac output in adults? |
5 ml of blood per minute |
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How do you calculate cardiac output? |
Pulse rate/ heart rate x stroke volume |
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What is respiration? |
The exchange of oxygen and carbon dioxide in the lungs |
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What are the two processes of respiration? |
External respiration Internal respiration |
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What are the four ways that external expiration occurs? |
Ventilation- mechanical movement of air out the lungs Dispersion of air through the bronchial tree of the lungs Diffusion of oxygen and carbon dioxide molecules across the alveolar membrane Perfusion- the movement of blood through the lungs and tissues |
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What are the organs of respiration? |
Nose Pharynx Larynx Trachea Bronchi Lungs |
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How much water is evaporated from the skin and lungs on a daily basis? |
800 ml |
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How many lobes are there in the right and left lung? |
Three - right Two- left |
