A&P 2: Chapter 10

Match the following term relating to a lever system with its correct function or description: Lever.

A rigid bar that moves on a fixed point

Match the following term relating to a lever system with its appropriate anatomical part: Effort.

Biceps brachii

Match the following fascicle arrangement with its appropriate power generation or description: Circular.

Close body openings by contracting

Match the following term relating to a lever system with its appropriate anatomical part: Load.

Distal end of forearm, hand

Match the following term relating to a lever with its appropriate description or example: Second-class lever.

Effort applied at one end of the lever; the fulcrum located at the other; load between them

Match the following term relating to a lever with its appropriate description or example: Third-class lever.

Effort applied between the load and the fulcrum

Match the following term relating to a lever with its appropriate description or example: First-class lever.

Effort is applied at one end of the lever; the load at the other; fulcrum somewhere in between

Match the following term relating to a lever system with its appropriate anatomical part: Fulcrum.

Elbow joint

Damage to which of the following muscles would hinder inspiration?

External intercostals

Match the muscle action involving mastication with its appropriate muscle name: Protracts the mandible and moves the mandible side to side.

Medial pterygoid

Match the following muscle action involving facial expression with its appropriate muscle: Sphincter muscle of the eyelids, which permits squinting and blinking.

Orbicularis oculi

Match the muscle with its correct origin and insertion: Temporalis.

Origin: temporal fossa Insertion: coronoid process of mandible

Select the muscle of facial expression that tenses the neck

Platysma

Which of the following describes the action of using a pry bar to move a heavy rock?

Power lever working at a mechanical advantage

Match the following term relating to a lever system with its appropriate anatomical part: Lever.

Radius

Which muscle flexes and rotates the lumbar region of the vertebral column? This muscle extends vertically from the lower sternum to the pubis.

Rectus abdominis

Which of the following statements about second-class levers is correct?

Second-class levers have great strength, but are slow and have little range of motion.

Match the following description of muscles that move the head and trunk with its appropriate name: Composite muscle forming part of the deep layer of intrinsic back muscles, located along the back from thoracic region to head.

Semispinalis capitis, cervicis, and thoracis

Which of the following describes the action of a heavy acrobat jumping onto the short end of a seesaw and propelling his lighter partner high into the air?

Speed lever working at a mechanical disadvantage

Match the following description of muscles that move the head and trunk with its appropriate name: Broad two-part superficial muscle that lies on the back of neck between base of skull and the upper thoracic vertebrae.

Splenius capitis and cervicis

Match the following type of lever with its appropriate example: Second-class lever.

Standing on tip-toe

Match the following description of muscles that move the head and trunk with its appropriate name: Flexes and laterally rotates the head.

Sternocleidomastoid

Match the following fascicle arrangement with the appropriate power generation or description: Parallel.

Straplike with an expanded belly; great ability to shorten but not usually very powerful

Match the following term relating to a lever system with its correct function or description: Effort.

The applied force

Match the following term relating to a lever system with its correct function or description: Fulcrum.

The fixed point upon which a lever moves

Match the following term relating to a lever system with its correct function or description: Load.

The resistance

Which of the following muscles divides the neck into two triangles?

The sternocleidomastoid

Sphincters have a __________ arrangement of fascicles.

circular

The __________ nerves innervate all of the extrinsic tongue muscles.

hypoglossal

The external intercostal muscles are used primarily in

inhalation

The extensor digitorum muscle is an example of a __________ muscle.

pennate