A+P Unit 3

Antagonist

A muscle that opposes or slows an action is called a___________

When the diaphragm contracts,

The volume of the thoracic cavity increases

Second-Class Lever

The Action of rising up on your toes is an example of a _____________

Zygomaticus Major

Which muscle Assists with smiling?

Latissimus Dorsi

In an inguinal hernia, abdominal organs or portions of organs protrude through an enlarged inguinal canal. Which of the following muscles is not superficial to the inguinal canal?

External and Internal Obliques

The muscles used to flex the trunk laterally are the___________

Rectus Femoris

Which of the following is NOT muscle from the hamstring muscle group?

Triceps Brachii

Which of these muscles is located on the posterior surface of the arm?

When the sarcomere contracts and shortens, _____________________

The A band stays the same

If oxygen is not available, the muscle fiber will produce ATP by_______

Anaerobic Catabolism

Th type of contraction that causes a skeletal muscle to lengthen is called_________

Isotonic eccentric contraction

Which of the following is NOT one of the factors that contribute to muscle fatigue?

Excess post-exercise oxygen consumption

If the Na+ voltage-gated channels in muscle cell open, what will be the result?

Depolarization

The immediate result of acetylcholine binding to receptors on the motor end plate is_________

Local depolarization of the sarcolemma

The______ is defined as the bone that the muscle is attacthed to that has the greater mass and stability during contraction and is typically more proximal

Origin

Which of the following terms are synonymous with “anterior”?

Cranial and Ventral

Where would you find a temporalis muscle?

Over the temporal bone of the cranium