Brainscape's Knowledge GenomeTM

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


See full index

Anatomy of the Pelvis > Muscles of the Pelvis > Flashcards

Muscles of the Pelvis Flashcards

1
Q

name the 4 muscles of the pelvis

A
  • piriformis
  • coccygeus
  • levator ani
  • obturator internus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

name the muscles that make up the pelvic diaphragm

A
  • levator ani

- coccygeus

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

name the three parts that make up the levator ani muscles

A
  • iliococcygeus
  • pubococcygeus
  • puborectalis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the origins of the piriformis muscle?

A
  • surface of the sacrum

- sacrotuberous ligament

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

what are the insertions of the piriformis muscle?

A
  • superior border of the greater trochanter of the femur
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How does the piriformis muscle reach the greater trochanter of the femur?

A

it passes laterally through thee greater sciatic foramen

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

what are the actions of the piriformis muscle?

A
  • laterally rotates thigh at hip bone

- transversely abducts thigh at hip bone

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

what type of muscle is piriformis?

A

convergent skeletal muscle

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

describe the appearance of the piriformis muscle

A
  • thick

- pear-shaped

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

what is the origin of the obturator internus muscle?

A

obturator membrane

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

what are the insertion of the obturator internus muscle?

A

medial aspect of the greater trochanter of the femur

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

describe the path the obturator internus muscle takes to reach the greater trochanter of the fumur

A
  • passes through the lesser sciatic foramen

- it makes a 90 degree turn around the ischium/ischial tuberosity

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

what are the actions of the obturator internus muscle?

A
  • laterally rotates thigh at hip bone

- transversely abducts thigh at hip bone

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

what type of muscle is the obturator internus msucle?

A

multipennate skeletal muscle

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

describe the appearance of the obturator internus muscle

A

broad

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

what is the tendinous arch?

A
  • condensation of fascia that lines the pelvic floor
17
Q

describe location of tendinous arch

A

goes from the body of the pubic to the ischial spine

18
Q

what separates the pelvic cavity from the perineum?

A

the pelvic diaphragm

19
Q

what lies in the midline anteriorly of the levator ani muscles?

A

a triangular gap known as the urogenital hiatus

20
Q

what 3 things does the urogenital hiatus transmit in females?

A
  • urethra
  • rectum
  • vagina
21
Q

what lies in the levator ani muscle posteriorly?

A

anal hiatus pierced by anal canal

22
Q

what is the origin of the iliococcygeus muscle?

A
  • ischial spine

- tendinous arch

23
Q

what are the insertions of the iliococcygeus muscle?

A
  • coccyx
  • midline raphe
    iliococcygeal raphe
    anococcygeal raphe
24
Q

what are the actions of the levator ani muscles?

A
  • provides structural support to the pelvic viscera and structures
  • faecal continence
25
Q

what type of muscle is the levator ani muscle?

A

flat skeletal muscle

26
Q

describe the appearance of the levator ani muscle

A

broad

27
Q

what are the origins of the pubococcygeus muscle?

A
  • posterior region of the pubis

- anterior region of tendinous arch

28
Q

what are the insertions of the pubococcygeus muscle?

A
  • coccyx

- anterolateral parts of the sacrum

29
Q

what are the actions of the pubococcygeus muscle?

A
  • provides structural support to the pelvic viscera and structures
  • faecal continence
30
Q

what type of muscle is the pubococcygeus?

A

flat skeletal muscle

31
Q

describe the appearance of the pubococcygeus muscle

A

broad

32
Q

what is the origin of the puborectalis muscle?

A

posterior region of the pubis

33
Q

what is the insertion of the puborectalis muscle?

A

midline raphe

34
Q

what are the three main functions of the levator ani muscles?

A
  • Support of abdominopelvic viscera
  • Resistance to increases in intra-pelvic/abdominal pressure during activities such as coughing or lifting heavy objects.
  • Urinary and faecal continence
35
Q

what are the actions of the puborectalis muscle?

A
  • urinary and faecal continence

- support

36
Q

what is the levator ani innervated by?

A
  • primarily by the nerve to levator ani s3-s4

- some areas also supplied by pudendal nerve s2-s4

37
Q

what is the arterial supply of the levator ani muscles?

A
  • internal pudendal artery
  • inferior gluteal artery
  • inferior vesicle artery
38
Q

what type of muscle is puborectalis?

A

thick narrow skeletal muscle

Anatomy of the Pelvis (5 decks)

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