The presence of unions is usually found to decrease company profits.

Expiration during quiet breathing

A) is an active process.
B) requires more muscle contractions than inspiration.
C) is due to contraction of the diaphragm and elevation of the ribs.
D) occurs when the diaphragm and external intercostal muscles relax.
E) is not affected by the elastic properties of the lungs.

While standing, looking up at the stars requires ________.

A) elevation of the mandible
B) extension of the neck
C) hyperextension of the neck
D) abduction of the neck
E) dorsiflexion of the neck

Which of the following characteristics is NOT consistent with simple squamous epithelial tissue?

A) Little extracellular material
B) Rest on a basement membrane
C) Has good blood supply within it
D) The cells are thin and flat (not thick)
E) Acts as a permeability barrier

The spinal cord ends at the ________.

A) sacrum
B) coccyx
C) 5th lumbar vertebrae
D) 2nd lumbar vertebrae

Imagine that you are able to monitor specific cell activity in the body. If you detected a dramatic decrease in osteoclast activity, which of the following characteristics would also be detectable?

A) Increased calcitonin levels in the blood
B) Increased PTH levels in the blood
C) Decreased calcitonin levels in the blood
D) Decreased PTH levels in the blood