Which of the following are involved in external respiration?
a. Red blood cells and body cells
b. Scalenes and trapezius muscles
c. Alveoli and pulmonary capillaries
d. External oblique and transverse abdominal muscles
ANS: C
External respiration involves the exchange of oxygen and carbon dioxide (CO2) between the al-veoli and the pulmonary capillaries. Internal respiration occurs at the cellular level and involves movement of oxygen from the systemic blood into the cells. Scalene and trapezius muscles are accessory muscles of inspiration. External oblique and transverse abdominal muscles are accesso-ry muscles of expiration.
You might also like to view...
The sense of touch can be considered a ________
A) special sense B) chemoreceptor C) general sense D) Both B and C
Higher than normal levels of cholesterol in the blood signifies a condition known as:
A. hypervolemia B. ischemic heart disease C. hypercholesterolemia D. hypertension
What types of animals are treated most commonly in a veterinary teaching hospital?
The table pillow should be covered with:
A) nothing B) a reusable plastic cover C) a disposable towel D) a standard pillowcase