Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Gross Anatomy 2 > Exam 3 Muscles > Flashcards

Exam 3 Muscles Flashcards

(60 cards)

Start Studying
1
Q

Origin: External Intercostal

A

Inferior border of rib

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

Insertion: External Intercostal

A

Superior border of ribs below

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

Innervation: External Intercostal

A

Intercostal Nerve

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

Main Action: External Intercostal

A

During forced inspiration: elevate ribs

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

Origin: Internal Intercostal

A

Inferior border of rib

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

Insertion: Internal Intercostal

A

Superior border of rib below

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

Innervation: Internal Intercostal

A

Intercostal Nerve

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

Main Action: Internal Intercostal

A

During forced inspiration: interosseous part depresses ribs; interchondral part elevates ribs

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

Origin: Innermost Intercostal

A

Inferior border of ribs

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

Insertion: Innermost Intercostal

A

Superior border of ribs below

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

Innervation: Innermost Intercostal

A

Intercostal Nerve

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

Main Action: Innermost Intercostal

A

During forced inspiration: interosseous part depresses ribs; interchondral part elevates ribs

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

Origin: Transverse Thoracic

A

Posterior surface of lower sternum

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

Insertion: Transverse Thoracic

A

Internal surface of costal cartilages 2-6

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

Innervation: Transverse Thoracic

A

Intercostal Nerve

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

Main Action: Transverse Thoracic

A

Weakly depresses ribs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Origin: External Oblique

A

External Surfaces of 5th-12th ribs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Insertion: External Oblique

A

Linea alba
Pubic tubercle
Anterior half of iliac crest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Innervation: External Oblique

A

Thoraco-abdominal Nerves (anterior rami T7-T11) and subcostal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Main Action: External Oblique

A

Compress and support abdominal viscera

Flex and rotate trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Origin: Internal Oblique

A

Thoracolumbar Fascia
Anterior 2/3 or iliac crest
CT deep to inguinal ligament

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Insertion: Internal Oblique

A

Inferior borders of 10th-12th ribs
Linea Alba
Pubis via conjoint tendon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Innervation: Internal Oblique

A

Thoraco-abdominal Nerves (anterior rami T7-T11), subcostal and 1st lumbar nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Main Action: Internal Oblique

A

Compress and support abdominal viscera

Flex and rotate trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Origin: Transversus Abdominis
Internal surfaces of 7th-12th costal cartilages, thoracolumbar fascia, iliac crest, CT deep to inguinal ligament
26
Insertion: Transversus Abdominis
Linea alba with aponeurosis of internal oblique, pubic crest, and pubis via conjoint tendon
27
Innervation: Tranversus Abdominis
Thoraco-abdominal Nerves (anterior rami T7-T11), subcostal and 1st lumbar nerve
28
Main Action: Transversus Abdominis
Compresses and supports abdominal viscera
29
Origin: Rectus Abdominis
Pubic symphysis and pubic crest
30
Insertion: Rectus Abdominis
Xiphoid process and 5th-7th costal cartilages
31
Innervation: Rectus Abdominis
Thoraco-abdominal and subcostal nerves (anterior rami of T7-T12 spinal nerves)
32
Main Action: Rectus Abdominis
``` Flexes trunk (lumbar vertebrae) and compresses abdominal viscera Stabilizes and controls tilt of pelvis (antilordosis) ```
33
Origin: Psoas Major
Transverse processes of lumbar vertebrae; sides of bodies of T12-S1 vertebrae and intervening IV discs
34
Insertion: Psoas Major
Lesser trochanter of femur
35
Innervation: Psoas Major
Lumbar plexus via anterior branches of nerves L2-L4
36
Main Action: Psoas Major
Acting inferiorly with iliacus: flexes thigh Acting superiorly: flexes vertebral column laterally to balance the trunk When sitting: acts inferiorly with iliacus to flex trunk
37
Origin: Iliacus
Superior 2/3 of iliac fossa, ala of sacrum, and anterior sacro-iliac ligaments
38
Insertion: Iliacus
Lesser trochanter of femur and shaft inferior to Psoas major tendon
39
Innervation: Iliacus
Femoral nerve (L2-L4)
40
Main Action: Iliacus
Flexes thigh and stabilizes hip joint | Acts with Psoas major
41
Origin: Quadratus Lumborum
Medial half of inferior border of 12th rib and tips of lumbar transverse process
42
Insertion: Quadratus Lumborium
Iliolumbar ligament and internal lip of iliac crest
43
Insertion: Quadratus Lumborum
Iliolumbar ligament and internal lip of iliac crest
44
Main Action: Quadratus Lumborum
Extends and laterally flexes vertebral column | Flexes 12th rib during inspiration
45
Origin: Obturator Internus
Pelvic surface of the ilium and ischium | Obturator membrane
46
Insertion: Obturator Internus
Greater trochanter of the femur
47
Insertion: Obturator Internus
Nerve to Obturator Internus
48
Main Action: Obturator Internus
Laterally rotates hip joint | Assists in holding head of femur in acetabulum
49
Origin: Piriformis
Pelvic surface of 2nd-4th sacral segments Superior margin of greater sciatic notch Sacrotuberous ligament
50
Insertion: Piriformis
Greater trochanter
51
Innervation: Piriformis
Anterior rami of S1 and S2
52
Main Action: Piriformis
Laterally rotates hip joint Abducts hip joint Holds head of femur in acteabulum
53
Origin: Levator Ani
Body of pubis Tendinous arch of levator ani Ischial spine
54
Insertion: Levator Ani
``` Perineal body Coccyx Anococcygeal ligament Walls of prostate or vagina Rectum Anal canal ```
55
Innervation: Levator Ani
Nerve to Levator Ani (branches of S4) Inferior anal (rectal) nerve Coccygeal plexus
56
Main Action: Levator Ani
Helps support pelvic viscera | Resists increases in intra-abdominal pressure
57
Origin: Coccygeous
Ischial spine
58
Insertion: Coccygeous
Inferior end of sacrum and coccyx
59
Innervation: Coccygeous
Branches of S4 and S5 nerves
60
Main Action: Coccygeous
Forms small part of pelvic diaphragm that supports pelvic viscera Flexes coccyx

Gross Anatomy 2 (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions