-
cremaster muscle
- Origin- inguinal ligament
- Insertion-
- Action- genitofemoral nerve
- Innervation- raise and lower the scrotum
-
First two layers of the back
- 1st layer: A. Trapezius
- B. Latissimus Dorsi
-
Ventral Primary Rami ( hypomere)
Motor
-
Dorsal Primary Rami (epimere)
Sensory
-
What are the respiratory muscles of the back?
- 1. Serratus posterior Superior
- 2. Serratus posterior inferior
-
Serratus Posterior superior (A,O,I, INN)
- Origin- C7- T3 Spinous process
- Insertion- Ribs
- Action- Elevate Ribs ( Inspiration)
- Innervation- Ventral Primary Rami
-
Serratus Posterior Inferior
- Origin- T11- L3 Spinous process
- Insertion- Ribs ( lower) 9-12
- Action- Depress Ribs ( expiration)
- Innervation- Ventral Primary Rami
-
True Back Muscles
- Groups:Splenious
- Erector Spinae
- Transversospinalis
-
Splenius Capitus
- Origin- Ligamentus Nuche
- Insertion- Mastoid and Nuchal Line
- Action- Bilateral Flexion and Rotation to the same side
- Innervation- Dorsal Primary Rami
-
Splenius Cervicis
- Origin- Spinous Process T1-T6
- Insertion- Transverse Process C1- C4
- Action- Bilateral Flexion and rotate neck to the same side
- Innervation Dorsal Primary Rami
-
Erector Spinae Group
- (I.. Luv.. S(word)..
- Action: Bilaterally flex, extend and rotate head ( to same side) and vertebral column.
- -Ilicostalis
- -longissimus
- -spinalis
-
Spinalis
- Origin- Illiac Crest, Sacrum
- Insertion- Spinous Process
- Action- Bilaterally flex, extend and rotate head ( to same side) and vertebral column
- Innervation- Dorsal Primary Rami of Spinal nerves
-
Iliocostalis
- Origin- Sacrm, Illiac Crest, Lumbar Spinous Process
- Insertion- Ribs
- Action- Bilaterally flex, extend and rotate head ( to same side) and vertebral column
- Innervation- Dorsal Primary Rami
-
Longissimus
- Origin- Sacrm, Illiac Crest, Lumbar Spinous Process
- Insertion- Transverse Process
- Action-Bilaterally flex, extend and rotate head ( to same side) and vertebral column
- Innervation- Dorsal Primary Rami
-
Transversospinalis
- Semispinalis Capitis
- Multifidi
- Rotartory
-
Semispinals Capitis
- Origin- Transverse Process t6-t7
- Insertion- Opcipital Bone/ Nuchal Ridges
- Action- Extends head
- Innervation- Dorsal Primary Rami
-
Segmental sensory innervation on a deramtomes of the Nipple
T-5
-
Segmental sensory innervation on a deramtomes of the Belly Button
T-10
-
The thoracic wall has 3 muscles layers:
- 1. external intercostal
- 2. internal intercostal
- 3. innermost intercostal
- a. transverse thoracis
- b. subcostal
-
External Intercostal Muscle
- Origin- upper rib, inferior border
- Insertion- lower rib, upper border
- Action- : inspiration, (maintains intercostal space)
- Innervation- intercostal nerves
-
Internal Intercostal Muscle
- Origin- lower rib,upper border
- Insertion- upper rib, inferior border
- Action- force expiration, (maintains intercostal space)
- Innervation- : intercostal nerves
-
Innermost Intercostal
- Origin: rib above
- Insertion: rib below
- Action: ?
- Innervation: intercostal nerves
-
External Abdominal Oblique
- Origin: lower 8 ribs
- Insertion: linea alba pubic tubercle & crest iliac crest
- Actions: a. laterally flexes & rotates spine
- b. increase abdominal pressure
- c. fixes ribs during forced expiration
- Nerves: lower intercostal nerves
-
Internal Abdominal Oblique
- Origin: lumbar fascia iliac crest inguinal ligament
- Insertion: linea alba last 4 ribs pubic crest
- Actions: a. laterally flexes & rotates spine b. increase abdominal pressure c. assists forced expiration
- Nerves: lower intercostal nerves
-
Transverse Abdominis
- Origin: lumbar fascia iliac crest inguinal ligament cartilages of lower 6 ribs
- Insertion: linea alba pubic crest
- Actions: laterally flexes & rotates spine increase abdominal pressure assists respiration
- Nerves: lower intercostal nerves
-
Rectus Abdominis
- Origin: pubic bone
- Insertion: xiphoid process lower 6 ribs
- Actions: laterally flexes (unilateral) flexes spine (bilateral), assists forced expiration, increases abdominal pressure
- Nerves: lower intercostal nerves
-
Tendinous Intersections
Tendons that run to form the abdominals... 6 pack
-
linea alba
The line that goes through the median of the abdomen
-
The inguinal canal passes through three abdominal muscles or their aponeuroses
- external oblique
- internal oblique
- transverse abdominis
-
cremaster muscle
- Origin- inguinal ligament
- Insertion-
- Action- genitofemoral nerve
- Innervation- raise and lower the scrotum
|
|
