Gross Anatomy of the Muscular System Lab

65 terms by strohlama 

Create a new folder

Advertisement Upgrade to remove ads

skeletal muscles

What cause movement?

prime movers

What are muscles that are primarily responsible for producing a particular movement called?

agonists

What is another name for prime movers?

antagonists

What are muscles that oppose or reverse a movement called?

relaxed

When a prime mover is active, the fibers of the antagonist are stretched, what state are they in when this occurs?

antagonist

What can also regulate the prime mover by providing some resistance, to prevent overshoot or to stop its action?

biceps muscle of the arm

What is an example of a prime mover of elbow flexion?

antagonists

what can be prime movers in their own right?

triceps muscle of the arm

What is an example of a prime mover of elbow extension?

Synergists

What aid the action of agonists by reducing undesirable or unnecessary movement?

they stabilize the joints

What do synergists do to joints?

fixation muscles

What are fixators also known as?

fixators

What are specialized synergists?

Fixators

What immobilize the origin of a prime mover so that all the tension is exerted at the insertion?

fixators

What are muscle that help maintain posture considered?

Direction of muscle fibers, relative size of the muscle, location of the muscle, number of origins, location of the muscle's origin and insertion, shape of the muscle, and the action of the muscle

What are the 7 criterias of naming muscles?

Origin

What usually tends to be the bone that does not move?

Insertion

What usually tends to be the moveable bone?

straight

What does the term rectus mean?

transverse and oblique

What two terms are used when the muscle fibers run at right angles and obliquely to the imaginary line?

rectus

A muscle with fibers (and fascicles) running parallel to that imaginary line will have what term?

largest

What does the term maximus mean?

smallest

What does the term minimus mean?

long

What does the term longus mean?

short

What does the term brevis mean?

the number of origins

When numbers are used to identify muscles (bi, tri, quad) what do the numbers represent?

head

What is another name for origin?

The origin

When naming the muscle in regards to the location of its origin and insertions which name comes first?

sternum

What does the term sterno stand for?

clavicle

What does the term cleido stand for?

triangle

What does the term deltoid mean?

a trapezoid

What does the trapezius muscle resemble?

away from the body

Which way does an abduction go?

closer to the body

Which way does an adduction go?

because they insert into the skin (or other muscles) rather than into bone

Why are the muscles of facial expression different from ost skeletal muscles?

muscles of mastication, and the six extrinsic eye muscles

What other muscles are found on the head besides the muscles of facial expression?

the muscles of mastication

What muscles manipulate the mandible during chewing?

The six extrinsic eye muscles

Which muscles aim the eyes?

within the orbit

Where are the six extrinsic eye muscles located?

frontal belly of the epicranius

What muscle is used to raise your eyebrow and wrinkle your forehead?

orbicularis oculi

What muscle is used to blink your eyes and wink?

Orbicularis oris

What muscle is used to close your lips and to pucker?

zygomaticus

What muscle is used to smile?

at the angle of the jaw

Where can the masseter be palpated?

temporalis

Which muscle is demonstrated when you place your hands on your temples and clench your teeth?

the head and the shoulder girdle

What are the neck muscles primarily concerned with the movement of?

The vertebral column, the ribs, the head, and the arms

What does the trunk musculature cause movement for?

the ribs, the head, and the arms

What does the anterior thorax muscles move?

Buccinator

What muscle has the molar region of maxilla and mandible as its origin?

Buccinator

What muscle has the orbicularis oris as its insertion?

Buccinator

What muscle draws the corner of the mouth laterall; compresses cheek (as in whistling); holds food between teeth during chewing?

Masseter

What muscle has the zygomatic arch and maxilla as its origin?

Masseter

What muscle has the angle and ramus of mandible as its insertion?

Masseter

What muscle is the prime mover of jaw closure; and elevates the mandible?

Platysma

What muscle has the fascia of the chest (over pectoral muscles) and deltoid as its origin?

Platysma

What muscle has the lower margin of the mandible, the skin, and the muscle at the corner of the mouth as its insertion?

Platysma

What muscle tenses the skin of the neck; depresses the mandible; pulls the lower lip back and down (i.e., produces downward sag of the mouth)?

Sternocleidomastoid

What muscle has the manubrium of the sternum and medial portion of the clavicle as its origin?

Sternocleidomastoid

What muscle has the mastoid process of the temporal bone and the superior nuchal line of the occipital bone as its insertion?

Sternocleidomastoid

What muscle has simultaneous contractions of both muscles of pair causes flexion of the neckforward, generally against ressistance (as when lying on the back); acting independently, rotate head toward shoulder on opposite side?

Sternohyoid

What muscle has the manubrium and medial end of the clavicle as its origin?

Sternohyoid

What muscle has the lower margin of the body of the hyoid bone as its insertion?

Sternohyoid and the sternothyroid

What muscles is acting with the sternothyroid and omohyoid depresses larynx and hyoid bone if mandible is fixed; may also flex skull?

Sternothyroid

What muscle has the posterior surface of the manubrium as its origin?

Sternothyroid

What muscle ahs the thyroid cartilage of the larynx as its insertion?

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set