Which of the following systems functions as a means to rid the body of carbon dioxide?

a. Lymphatic system.
b. Urinary system.
c. Respiratory system.
d. Digestive system.


Answer: c. Respiratory system.

Anatomy & Physiology

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Which of the following muscle types has tone in the absence of an external stimulus?

a. skeletal b. multiunit smooth muscle c. single-unit smooth muscle d. cardiac muscle e. all of these

Anatomy & Physiology

 A group of people have their BMI scores calculated: Jordan has a BMI of 26. Matt has a BMI of 21. Kelsey has a BMI score of 29. Heather has a BMI score of 31. Chad has a BMI of 23. Which of these people is considered overweight by the BMI standards?

A. Two or more of these people are considered overweight B. Matt C. Heather D. Jordan

Anatomy & Physiology

The brain, spinal cord, and lens and cornea of the eye develop from the primary germ layer called the:

a. ectoderm b. mesoderm c. endoderm d. none of the above

Anatomy & Physiology

In smooth muscle, where does the calcium needed for contraction come from?

A. Mitochondria B. The motor nerve fiber C. The sarcoplasmic reticulum D. The extracellular fluid E. Intercalated discs

Anatomy & Physiology