Page 189 - 86 human physiology part-2

Chapter 20

B) Smooth
• C) Skeletal
D) All of the Above

5. What is an example of a smooth muscle?

A) Masseter (Face)
• B) Bladder
C) Heart
D) Pronator Teres (Forearm)
E) Rectus Abdominis (belly)

6. Each myosin filament is surrounded by ____ actin filaments.

A) Two
B) Four
• C) Six
D) Eight
E) Seven

Blood Physiology

1.Taking aspirin every day can reduce the risk of heart disease because:

A) it is a powerful vasodilator
B) it blocks pain receptors in heart tissue
C) it stops ventricular fibrillation
D) it loosens plaque on arterial walls
• E) it prevents platelet clumping

2. A hematocrit measures percentage of:

A) White blood cells
B) Plasma
C) Platelets
• D) Red blood cells

3. Fred's blood type is O- and Ginger's is B+. Fred and Ginger have a son who is AB+. What do
you conclude?

A) If they have a second child Ginger needs to have RhoGam shot
B) There is no risk to a second child, unless it has a negative blood type
C) If the child needs a blood transfusion Fred could provide it safely, but not Ginger
• D) Fred is not the boy’s father

4. Which blood component plays the largest role in maintaining the osmotic pressure of blood?

• A) albumin

404 | Human Physiology