Brainscape's Knowledge GenomeTM

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


See full index

anatomy 2 (post) > abdomen/pelvis muscles > Flashcards

abdomen/pelvis muscles Flashcards

1
Q

cremaster

A
  • attachments: medial edge of internal oblique > spermatic cord
  • action: elevation of testis
  • innervation: genitofemoral nerve L1-L2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

diaphragm

A
  • attachments: xiphoid process, inner surface of lower ribs and costal cartilagess, medial and lateral arcuate ligaments, lumbar vertebrae via crura > central tendon
  • action: inspiration (negative thoracic pressure by inferior displacement)
  • innervation: phrenic nerve C3-C5
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

external abdominal oblique

A
  • attachments: lower 8 ribs > iliac crest, rectus sheath
  • action: flexion and rotation of trunk, compresses abdominal caavity
  • ventral rami T7-T12
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

internal abdominal oblique

A
  • attachments: thoracolumbar fascia > inguinal ligament, iliac crest, rectus sheath
  • action: flexion and rotation of the trunk, compression of the abdominal cavity
  • innervation: ventral rami T7-L1, iliohypogastric and ilioinguinal ventral rami
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

quadratus lumborum

A
  • attachments: 12th rib and transverse processes L1-L4 > iliolumbar ligament and iliac crest
  • action: extension and lateral flexion of trunk, fixes 12th rib during respiration
  • innervation: lumbar plexus ventral rami T12-L3
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

rectus abdominis

A
  • attachments: xiphoid process and adjacent costal cartilages of ribs 5-7 > pubic cest and tubercle (symphysis)
  • action: flexion of trunk, compression of abdominal cavity
  • innervation: lower thoracic ventral rami T5-T12
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

transversus abdominis

A
  • attachments: lower six costal cartilages and thoracolumbar fascia > inguinal ligament, iliac crest, rectus sheath
  • action: compression of abdominal cavity
  • innervation: lower thoracic T7-T12
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

iliacus

A
  • attachments: iliac fossa > less trochanter of femur
  • action: flexion of thigh at hip joint
  • innervation: femoral nerve
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

psoas major

A
  • attachments: transverse processes of T12-L4 > lesser trochanter of femur
  • action: flexion of thigh at the hip joint
  • innervation: ventral rami L1-L3
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

piriformis

A
  • attachments: sacrum > greater trochanter of femur
  • action: lateral rotation of thigh at the hip joint
  • innervation: nerve to piriformis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

obturator internus

A
  • attachments: obturator membrane > greater trochanter of femur
  • action: lateral rotation of thigh at hip joint
  • innervation: nerve to obturator internus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

pelvic diaphragm/floor

A

coccygeus

levator ani (iliococcygeus, pubococcygeus, ruborectalis)

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

coccygeus

A
  • attachments: sacrospinous ligament > coccyx
  • action: supports and compresses posterior pelvic floor
  • innervation: ventral rami S4-S5
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

levator ani

A

iliococcygeus, pubococcygeus, puborectalis

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

iliococcygeus

A
  • attachments: ischium and tendinous arch of obturator internus > coccyx and midline raphe
  • action: support pelvic viscera
  • innervation: levator ani nerve (S4), inferior rectal nerve (pudendal S3-S4), coccygeal plexus
    • same as pubococcygeus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

pubococcygeus

A
  • attachments: pubis and tendinous arch of obturarot internus > coccyx and midline raphe and walls of prostate or vagina
  • action: support pelvic viscera and compress vagina
  • innervation levator ani nerve (S4), inferior rectal nerve (pudendal S3-S4), coccygeal plexus
    • same as iliococcygeus
17
Q

puborectalis

A
  • attachments: pubis and wall of rectum
  • action: maintain fecal continence
  • innervation: levator ani nerve (S4)
18
Q

bulbospongiosus

A
  • action:
    • male: empties urethra, maintains erection, contracts in ejaculation
    • female: constricts vaginal orifice and contributes to erection of clitoris
  • innervation: perineal branch of pudendal nerve
19
Q

ischiocavernosus

A
  • action: compresses crus during erection
  • innervation: perineal branch of pudendal nerve
20
Q

external anal sphinccter

A
  • action: closes anal canal and fixes perineal body
  • innervation: inferior rectal branch of pudendal nerve
21
Q

superficial transverse perineal muscle

A
  • attachments: inferior ramus of ischium and ischial tuberosity > inferior aspect of posterior border of perineal membrane to perineal body
  • action: supports perineal body, supports pelvic viscera, resist increased intraabdominal pressure
  • innervation: perineal branch of the pudendal nerve
22
Q

deep transverse perineal

A
  • attachments: inferior ramus of ischium and ischial tuberosity > superior aspect of posterior border of perineal membrane > perineal body and external anal sphincter
  • action: supports perineal body, supports pelvic viscera, resist increased intraabdominal pressure
  • innervation: perineal branch of the pudendal nerve

anatomy 2 (post) (13 decks)

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