Anatomy and Physiology Answer Key

G rising air temperature negative feedback mechanisms

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Unformatted text preview: asl pericardium 2. (a) Epithelial membranes (the skin, mucosa, and serosa) line, protect, and in some cases lubricate the surfaces of the body. They may be dry (as in skin) or absorptive or secretory. (b) Synovial membranes are composed of connective tissue only and contain no epithelial cells. Epithelial membranes, as the name suggests, are formed from epithelial and connective tissue. Biozone International 2009 Photocopying Prohibited Anatomy and Physiology Reproductive system: production of gametes and offspring. 8 at which carbon dioxide leaves. It also increases the rate of loading and unloading of oxygen and carbon dioxide into and out of the bloodstream. (b) Increasing the heart rate. This increases blood flow which facilitates the loading and unloading of oxygen and carbon dioxide into and out of the bloodstream. It also increases the speed of delivery of oxygen to working tissues (e.g. muscles) and speeds up the removal of carbon dioxide and other waste products of metabolism. permanent component of the skin. 3. Diagnostic Medicine (page 41) 1. 2. (a) A CT scan uses a series of X-rays to reconstruct a 3-D image of a tissue or organ. This image can be used to detect abnormalities such as tumors. (b) MRI uses computer analysis of high frequency radio waves (passed through tissue) to map out variations in tissue density. Computer imaging techniques are non-invasive (unlike surgery) and can give an accurate cross-sectional picture of an area of the body for the detection of tumors and other abnormalities in tissues. They are particularly useful in areas where other techniques are unsuitable (e.g. the central nervous system). Anatomy and Physiology 3. Biosensors use biological material, e.g. an enzyme, to detect the presence or concentration of a substance. The biological material is immobilized within a semiconductor. Its activity (response to the substrate), causes an ion change which is detected by a transducer, amplified, and displayed as a read-out. 1. Body temperatur...
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This document was uploaded on 01/28/2014.

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