In performing lateral flexion against gravity such as in a lateral sit-up, which of the following muscles would be least effective?

Where is the respiratory center located in the brain?

Which of the following muscles is not strengthened to any substantial degree by sit-ups?

Positioning the forearm in pronation decreases the effectiveness of the biceps brachii muscle. In flexing the elbow.

Sit-ups are an excellent exercise for strengthening the erector spinae muscles.

Nearly all movement of the spinal column takes place within the two supportive structures known as the _____ and _____.

The most deleterious (dangerous or lethal) type of mutation is a ______ mutation.

The horizontal indentations that transect the rectus abdominis muscle, giving it a segmented appearance is the linea alba.

Which of the following is not true regarding the rectus femoris, vastus medialis, vastus intermedius, vastus lateralis?

The medial collateral ligament originates on the medial aspect of upper medial femoral condyle and inserts on medial tibial surface.