The pressure difference between the two ends of a blood vessel is the driving force behind blood flow.

Name structure “b” from the figure:

14. The ______ is the main pumping mechanism of the heart

All mitochondria are found in the tail of the sperm cell.

Name part “d” from the figure:

Solve the problem.   A statue is 61-cm tall. When its shadow is 100 cm long, the shadow of a certain tree is 16 m long. How tall is the tree? Round to the nearest unit. (Give numerical value only in meters.)

The structure labeled with an “H” is permeable to:

Erection of the penis occurs when nitric oxide causest he testicular arteries to contract.

List THREE differences between mitosis and meiosis. Make sure to include what that difference looks like for BOTH mitosis and meiosis (i.e. if describing differences between dogs and birds, you wouldn’t just say that dogs have fur to keep warm and birds don’t, you’d also say that birds have feathers).

Glomerular capillaries have a low filtration pressure when compared to the systemic capillaries and vasa recta.