Describe the function of the pericardial sac around the heart. (2pts) Describe how the blood vessels (arteries and veins) are adapted to transport blood. State at least three physical adaptations for their function. (3pts)
Why is one side of the heart larger in size. Explain. (1pt)
Explain the two types of blood circulation seen in humans. (2pts)

a. List the 4 chambers of the heart and b. list the valves found in the heart also. (4pts)

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

creative diagnostics provides a protocol for total protein extraction based on ripa which is widely used.

b. climate change will cause an increase in biodiversity of all ecosystems.

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