Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy > Axial Muscles > Flashcards

Axial Muscles Flashcards

1
Q

What are the 4 groups of axial muscles

A

Muscles of the head and neck, muscles of the vertebral column, muscles of the trunk, muscles of the pelvic floor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Muscles of facial expression typically originate on the surface of the skull and they insert into the superficial fascia and dermis of the skin. When these muscles contract, the skin moves and results in facial expressions

A

Muscles of facial expression typically originate on the surface of the skull and they insert into the superficial fascia and dermis of the skin. When these muscles contract, the skin moves and results in facial expressions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the origin, insertion, and action of the orbicularis oris

A

Origin-maxillary bone and mandible
Insertion- lips
Action- compresses purses lips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the origin, insertion, and action of the orbicularis oculi

A

Origin-medial margin of orbit
Insertion-skin around eyelids
Action-closes eyes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the origin, insertion, and action of the frontal belly

A

Origin-epicranial aponeurosis
Insertion-skin of eyebrow and bridge of nose
Action-raises eyebrows, wrinkles forehead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the origin, insertion, and action of the occipital belly

A

Origin-occipital and temporal bone
Insertion-epicranial aponeurosis
Action-tenses and retracts scalp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the origin, insertion, and action of the platysma

A

Origin-superior thorax between cartilage of 2nd rib and acromion of scapula
Insertion-mandible and skin of cheek
Action-tenses skin of neck, depresses mandible and pulls lower lip inferiorly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Where are the temporalis, masseter, lateral/medial pterygoid located

A

Look at picture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the superficial muscles of mastication and what are their functions

A

Temporalis and masseter are both jaw closers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the deep muscles of mastication and what are their functions

A

Medial pterygoid is a jaw closer

Lateral pterygoid is a jaw opener

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the origin, insertion, and action of the masseter

A

Origin- zygomatic arch
Insertion- lateral surface of mandibular ramus
Action- elevates mandible and closes the jaws

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the origin, insertion, and action of the temporalis

A

origin-along temporal lines of skull
insertion-coronoid process of mandible
action-elevates mandible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the origin, insertion, and action of the pterygoids

A

Origin- lateral pterygoid plate
Insertion- medial surface of mandibular ramus
Action-
Medial:elevates the mandible and closes the jaws, or slides the mandible from side to side
Lateral:opens the jaws, protrudes the mandible, or slides the mandible from side to side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the origin, insertion, and action of the inferior rectus

A

Origin-sphenoid around optic canal
Insertion-inferior,medial surface of eyeball
Action-eye looks inferiorly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the origin, insertion, and action of the medial rectus

A

Origin-Sphenoid around optic canal
Insertion-medial surface of eyeball
Action-Eye looks medially

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the origin, insertion, and action of the superior rectus

A

Origin-sphenoid around optic canal
Insertion-superior surface of eyeball
Action-eye looks superiorly

17
Q

What is the origin, insertion, and action of the lateral rectus

A

Origin-sphenoid around optic canal
Insertion-lateral surface of eyeball
Action-eye looks laterally

18
Q

What is the origin, insertion, and action of the inferior oblique

A

Origin-maxillary bone at anterior portion of orbit
Insertion-inferior, lateral surface of eyeball
Action-eye rolls, looks superiorly and laterally

19
Q

What is the origin, insertion, and action of the superior oblique

A

Origin-sphenoid around optic canal
Insertion-superior, lateral surface of eyeball
Action-eye rolls, looks inferiorly and laterally

20
Q

What is the origin, insertion, and action of the genioglossus

A

Origin-medial surface of mandible around chin
Insertion-body of tongue, hyoid bone
Action-depresses and protracts tongue

21
Q

What is the origin, insertion, and action of the sternocleidomastoid

A

Origin-one head attaches to sternal end of clavicle, the other attaches to manubrium
Insertion-mastoid region of skull and lateral portion of superior nuchal line
Action-flexes the neck; one alone bends head toward shoulder and rotates neck

22
Q

What are erector spinae muscles

A

represent a mass of muscle that extends from the sacrum to the skull. They are superficial extensors of the vertebral column

23
Q

The erector spinae muscles are made up of the following muscle groups

A

spinalis (attach to spinous processes)
longissimus (attach to transverse processes)
iliocostalis (attach to ribs)
These muscles arise from a broad attachment to the posterior part of the iliac crest, sacrum and spinous processes. Their distal attachments are to ribs, transverse processes and spinous processes of vertebrae.
Acting bilaterally, they extend the vertebral column. Acting unilaterally, they laterally flex the vertebral column.

24
Q

What is the origin, insertion, and action of the scalenes

A

Origin- transverse and costal processes of cervical vertebrae
Insertion-superior surfaces of first two ribs
Action-Elevate ribs or flex neck

25
Q

What is the origin, insertion, and action of the external intercostals

A

Origin-inferior border of each rib
Insertion-superior border of more inferior rib
Action-elevates ribs

26
Q

What is the origin, insertion, and action of the internal intercostals

A

Origin-superior border of each rib
Insertion-inferior border of the preceding rib
Action-depress ribs

27
Q

What is the origin, insertion, and action of the external oblique

A

Origin-external and inferior borders of ribs 5-12
Insertion-linea alba and iliac crest
Action-compresses abdomen, depresses ribs, flexes or bends spine

28
Q

What is the origin, insertion, and action of the internal oblique

A

Origin-lumbodorsal fascia and iliac crest
Insertion-inferior ribs, xiphoid process, and line alba
Action-compresses abdomen, depresses ribs, flexes or bends spine

29
Q

What is the origin, insertion, and action of the diaphram

A

Origin- xiphoid process, cartilages of ribs 4-10, and anterior surfaces of lumbar vertebrae
Insertion-central tendinous sheet
Action-contraction expands thoracic cavity, compresses abdominopelvic cavity

30
Q

What is the origin, insertion, and action of the rectus abdominis

A

Origin-superior surface of pubis around symphysis
Insertion-inferior surfaces of costal cartilages(ribs 5-7) and xiphoid process
Action-depresses ribs, flexes vertebral column, compresses abdomen

31
Q

What muscles make up the urogenital triangle

A

Bulbospongiosus, ischiocavernosus, superficail transverse perineal, urogenital diaphragm, deep transverse perineal, external urethral sphincter

32
Q

What muscles make up the anal triangle

A

Pelvic diaphragm, coccygeus, levator ani, iliococcygeus, pubococcygeus

Anatomy (31 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions