Chapter 8/10

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What is the distal attachment of all three heads of the triceps brachii?

Olecranon

Which of the following is the most lateral bone in the forearm?

Radius

Muscles that dorsiflex the foot are found in which compartment of the leg?

Anterior

What is the action of the orbicularis oris?

Closes and protrudes lips as in kissing

Contraction of the left sternocleidomastoid causes the head to turn toward the right. What type of movement is this?

Contralateral

What is the primary action of the masseter?

Elevation of the mandible

Which term refers to a muscle that prevents a bone from moving during an action?

Fixator

The auditory ossicles include which of the following? Check all that apply.

Hyoid Mastoid

Choose the incorrect statement regarding the development of the skull from infancy through childhood

INCORRECT: The skull reaches about three-quarters its adult size by age 1

Choose the incorrect statement regarding the general features of the vertebral column.

INCORRECT: The vertebral column consists of a chain of 30 vertebrae with intervertebral discs of fibrocartilage between most of them. Why? Because there are 34

Which part of the ischium supports the body when sitting?

Ischial tuberosity

What are the proximal attachments of the soleus? Check all that apply.

Medial and lateral condyles of femur Ischial tuberosity

Which bone is the weight-bearing bone of the lower leg (crural region)?

Tibia

The action for the vastus lateralis muscle is to __________ the knee.

extend

The skeletal muscles are innervated by __________.

spinal nerves and cranial nerves

The concave surface of the ulna that wraps around the trochlea of the humerus is the __________ ___________.

trochlear notch


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