Question

1. Which of the following is NOT a component of the respiratory membrane?

a. alveolar basement membrane

b. alveolar wall epithelium

c. interstitial fluid

d. capillary endothelium 2. Which of the following is NOT a correct match of normal (quiet) breathing phase and normal muscle movements. a. inhalation: diaphragm contracts b. exhalation: diaphragm relaxes c. exhalation: external intercostals relax d. inhalation: sternocleidomastoid contracts 3. In terms of Boyle's gas law, which of the following is a correctly matched explanation for the breathing phase and the movement of air? a. exhalation: diaphragm moves up, increased volume in thorax, increased pressure in thorax b. inhalation: diaphragm flattens; decreased volume in thorax, decreased pressure in thorax c. exhalation: diaphragm moves up; increased volume in thorax, decreased pressure in thorax d. inhalation: diaphragm flattens, increased volume in thorax, decreased pressure in thorax

Answer 1

"Filtration of the fluid into the tissue spaces from the blood capillaries will occur continuously. However, the volume of fluid leaving the capillaries is higher than the fluid entering into the capillaries due to the less net inward gradient at the regular end. The remaining fluid present in the in the intercellular space is known as the ""interstitial fluid"" Interstitial fluid is a major component of the extracellular fluid and it accounts for 15% of the body weight. Interstitial fluid is not a component of respiratory membrane. Sternocleidomastoid is the muscle of the neck, its origin is at two muscle heads on the clavicle and sternum. The contraction of two sternocleidomastoid muscles of the neck causes flexion (decrease in the angle of a joint) of the head, it also aids in head rotation(side to side rotation"