Comment on subject's aerobic efficiency and fitness
Aerobic efficiency and fitness can be estimated using the following formula: INDEX = (Duration of exercise in seconds) x100 = 2(sum of first 3 pulse counts in recovery) Norms below 55 = poor 55-64 = low average 65-79 = average 80-89= good 90+= excellent
How does exchange of nutrients, wastes and gasses occur at the capillary level? What two pressures are involved and how do they create a difference in net pressure from the arterial end to the venous end of the capillary? Be specific.
understanding physiological makeup (human)
The most abundant compound in the human body is _____________________
Homeostasis means (a) maintenance of a stable internal environment (b) integrating the functions of the various organ systems (c) preventing any change in the organism
Understanding levels of organization within a mammalian organism
List the levels of organization of the body, in order of incresing complexity, beginning with the cell.
Understanding human anatomy, physiology, spleen function and location, lymphatic system
Which of the following statements about the spleen is (are) true? (a) The spleen is located in the lower left quadrant of the abdomen. (b) The spleen functions in the body's defense against infection and as a reservoir for blood. (c) The structure of the spleen is exactly like that of a lymph node. (d) Splenic pulp contains ...continues
Genes involved with the regulation mammalian "biological clock"
What genes are involved with the regulation mammalian "biological clock" causing it to maintain a consistent 24 hour cycle? Please describe the possible pathways involved in this phenomenon?
Describe the full "loop" from activation of a mechanoreceptor in the arm to the voluntary movement of the arm as a consequence (i.e. explain how somatosensory and motor information are conveyed within the nervous system). Please give a complete but succinct summary or explanation. Please explain
Effect of Acetylcholine on Intestinal Smooth Muscle Contraction
A segment of isolated rabbit ileum was suspended in an organ bath of tyrodes solution and connected to a kymograph. Rhythmic phasic contractions were recorded. Acetylcholine was added to the organ bath and caused an immediate very large increase in tone. Following this the amplitude of contractions was approx. 90% smaller than ...continues
For many years Cl- channels have been well studied in neurological systems, where these channels initiate action potentials at synapses, propagate signals along axons and dendrites, and trigger neurotransmitter release and Calcium influx. These activities play a central role in human physiology. Channels with Cl- conductance out ...continues
