Term
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Definition
rib to rib in superior-lateral to inferior-medial orientation
action: elevation of ribs
innervation: intercostal nerves |
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Term
| What do intercostal nerves T1-6 innervate? |
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Definition
| T1-6:External, internal intercostals, transversus thoracis, skin overyling intercostal spaces, proximal and medial aspect of arm |
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Term
| What do intercostal nerves T7-11 innervate? |
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Definition
| External, internal intercostals, muscles of anterior abdominal wall, skin overlying intercostal spaces and over rectus abdominis muscle |
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Term
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Definition
rib to rib in superior-medial to inferior-lateral orientation
action: depression of ribs
innervation: intercostal nerve |
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Term
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Definition
posterior sternum to costal cartilages
action: depresses ribs
innervation: intercostal nerves |
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Term
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Definition
lower 8 ribs to iliac crest and rectus sheath
action: flextion, rotation of trunk, compression abdominal cavity
innervation: ventral rami T7-12 |
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Term
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Definition
from thoracolumbar fascia to inguinal ligament, iliac crest, rectus sheath
action: flexion, rotation of trunk, compression abdominal cavity
innervation: lower thoracic and L1 ventral rami |
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Term
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Definition
from lower 6 costal cartilages and thoracolumbar fascia to inguinal ligament, iliac crest, rectus sheath
action: compression of abdominal cavity
innervation: lower thoracic and L1 ventral rami |
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Term
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Definition
xiphoid proces and costal cartilages to pubic crest and tubercle
actions: flexion of trunk, compression of abdominal cavity
innervation: lower thoracic ventral rami |
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Term
| What does the subcostal nerve T12 innervate? |
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Definition
| muscles of anterior abdominal wall: external, internal obliques, transversus abdominis, rectus abdominis, skin overlying lateral and anterior abdominal wall, parietal peritoneum |
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Term
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Definition
from xiphoid process, lower ribs and their cartilages, medial&lateral arcuate ligaments, lumbar vertebrae to central tendon
actions: inspiration
innervation: phrenic nerve C3-5 |
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Term
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Definition
medial edge internal oblique to spermatic cord
actions: elevation of testes
innervation: genitofemoral nerve |
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Term
| What does the genitofemoral nerve innervate? |
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Definition
| (L1,2)the cremaster muscle, skin overlying labium majorum or scrotum, skin overlying femoral triangle |
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Term
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Definition
from 12th rib to iliolumbar ligament and iliac crest
actions: extension and lateral flexion of trunk
innervation: ventral rami T12-L3 |
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Term
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Definition
from iliac crest, iliac fossa, sacroiliac ligaments to lesser trochanter of femur
actions: flexing thigh
innervation: femoral nerve |
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Term
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Definition
T12-L5 vertebrae and discs and transverse processes to lesser trochanter of femur
actions: flex hip
innervation: anterior rami lumbar nerves |
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Term
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Definition
sacrum and sacrotuberous ligament to greater trochanter femur
actions: laterally rotats and abducts thigh
innervation: anterior rami S1,2 |
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Term
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Definition
internal body of pubis to medial side greater trochanter
action: laterally rotates and abducts thigh
innervation: nerve to obturator internus |
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Term
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Definition
pubic symphysis, ischial spine to midline raphae and anococcygeal ligament
actions: supports pelvic viscera, compresses rectum and vagina
innervation: pudendal nerve |
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Term
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Definition
ischial spine and sacrospinous ligament to coccyx
actions: supports and compresses posterior pelvic floor
innervation: ventral rami S4-5 |
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Term
| What does the pudendal nerve innervate? |
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Definition
(S2-4)motor innervation to perineal muscles, external urethral sphincter and external anal sphincter, skin overlying anus
also carries preganglionic parasympathetic axons to corpus spongiosum and corpora cavernosa |
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Term
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Definition
male: median raphe and perineal body to surround bulb of penis
female: perineal body to surround vestibular bulb, vaginal orifice, and clitoris
actions:
male: empties urethra, maintains erection, contracts during ejaculation
female: constricts vaginal orifice, erection of clitoris
innervation: perineal branch of pudendal nerve |
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Term
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Definition
iscial tuberosity and ramus to crus of penis or clitoris
actions: compresses crus during erection
innervation: perineal branch of pudendal nerve |
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Term
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Definition
perineal body to anococcygeal raphe
actions: closses anal canal
innervation: inferior rectal branch of pudendal nerve |
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Term
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Definition
surrounds urethra
actions: compresses urethra
innervation: perineal branch of pudendal nerve |
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Term
| Deep and Superficial transverse perineus |
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Definition
ischial tuberosity and perineal body
actions: fixes perineal body
innervation: perineal branch of pudendal nerve |
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Term
| What does the iliohypogastric nerve innervate? |
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Definition
(L1)muscles of anterior abdominal wall
skin overlying lower anterior abdominal wall |
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Term
| What does the ilioinguinal nerve innervate? |
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Definition
| (L1)muscles of anterior abdominal wall, skin overlying proximomedial thigh, root of penis&scrotum/mons pubis&labium majorum |
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Term
| What does the lateral cutaneous nerve of the thigh innervate? |
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Definition
| L2,3. skin overlying lateral aspect of thigh |
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Term
| What does the posterior femoral cutaneous nerve innervate? |
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Definition
| S1-3. skin overlying gluteus maximus, skin overlying posterior aspect of perineum |
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