Explain why the alveoli normally do not fill with fluid.

A helicopter is flying horizontally at 8.0 m/s and an altitude of 18 m when a package of emergency medical supplies is ejected horizontally backward with a speed of 12 m/s relative to the helicopter. Ignoring air resistance, what is the horizontal distance between the package and the helicopter when the package hits the ground?

In a diploid cell in which 2n = 14, how many telomeres are there in each of the following phases of the cell cycle? (a) G1 (b) G2 (c) prophase of mitosis (d) telophase of mitosis

Trace the path of blood through the pulmonary circuit.

Distinguish between the pulmonary and systemic circuits of the cardiovascular system.

Define central venous pressure

Explain how veins function as blood reservoirs

Which of the following promote the flow of venous blood? a. skeletal muscle contraction b. breathing c. venoconstriction d. all of the above

Describe the effect of histamine on a capillary

Describe the control of blood pressure.

Describe the control of blood pressure .

Name several factors that influence blood pressure, and explain how each produces its effect.

Let u, v, and w be pairwise orthogonal vectors. (a) Show that

$$\| \mathbf { u } + \mathbf { v } + \mathbf { w } \| ^ { 2 } = \| \mathbf { u } \| ^ { 2 } + \| \mathbf { v } \| ^ { 2 } + \| \mathbf { w } \| ^ { 2 }$$

. (b) If u, v, and w are all the same length, show that they all make the same angle with u+v+w.

Explain control of blood flow through a capillary.