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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
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.
- Winter '13