The diaphragm separates the thoracic cavity from the:
a. pelvic cavity.
b. spinal cavity.
c. abdominal cavity.
d. heart.
Question 2
Which of the following statements regarding the integumentary system is true?
a. The skin protects the body against bacteria and other pathogens.
b. The skin contains four layers: the epidermal, dermal, subcutaneous, and nerve layers.
c. The epidermis is the thickest and most important layer of the skin.
d. The dermal layer is the outermost layer of the skin and contains sensory nerves.
