Author Question: The ________, a sheet of skeletal muscle that lies along the inferior border of the thoracic cavity, ... (Read 40 times)

Engineer · **on:** Jun 27, 2018

The ________, a sheet of skeletal muscle that lies along the inferior border of the thoracic cavity, is active during breathing.

A) diaphragm
B) hilum
C) mediastinum
D) parenchyma

Question 2

The combining form son/o- means ________.

A) point of light
B) sonar
C) quantity or amount
D) sound

lindahyatt42 · **Reply #1 on:** Jun 27, 2018

Answer to Question 1

A
Explanation: A) Correct
B) The hilum is an indentation, not a skeletal muscle.
C) The mediastinum is a small area in the thoracic cavity.
D) The parenchyma is the functional part of the lung, not a sheet of skeletal muscle.

Answer to Question 2

D
Explanation: A) Scint/i- means point of light.
B) There are no medical word parts that mean sonar.
C) Quantitat/o- means amount; quantity.
D) Correct