Back Muscles Flashcards
Which Muscles are the first layer (superficial) muscles?
Trapezius
Latissimus Dorsi
Name the Muscle?
The orgin
The insertion
Muscle-Trapezius
Orgin- occipital bone, Spinous process C7-T1
Inertion- Spine of scapula, acromial process, lateral 1/3 of clavicle
Name the action and innervation of this Muscle?
Action-Extension of the head, elevation, depression, and medial approximation of scapula
Innervation- accessory nerve (CN-XI)
Name the Muscle?
the orgin
the insertion
Latissimus Dorsi
Orgin-Spines of T7-12 and Thoracolumbar fascia
Insertion-Inertubecular groove of humerus and lesser tubecular crest
How does carbon move between organisms?
Feeding and decomposing.
Which part of the plant is the carbon dioxide absorbed through?
The leaves (stomata)
Which Muscles are derived from axial muscle (second layer)?
Rhomboid major
Rhomboid minor
Levator scapulae
Name the action and innervation of this muscle?
Action-Acts as antagonist to pectoralis major; extends humerus; rotates humerus medially; adducts and retracts humerus (as in swimming or doing pull-ups)
innervation - Thoracodorsal Nerve (CN VII - VIII)
Name the Muscle?
The orgin
The insertion
Rhomboid Major?
Orgin- Spinous process T2-T5
insertion - Medial edge of Scapula
What is the action and innervation of this muscle?
Action - Retracts Scapula, depresses glenoid
Innervation- Dorsal Scapular nerve (CV)
Name the Muscle
Orgin
insertion
Rhomboid Minor
Orgin - spinous process C7-T1
Insertion -Medial edge of scapula
What is the Action and innervation of this muscle?
Action - Retracts scapula, depresses glenoid
Innervation- Dorsal scapular nerve (CV)
Name the Mucsle?
Orgin?
Insertion?
Levator Scapulae
Orgin - Tranverse Process C1-C4
Medial edge of scapula
Name the Action and innervation of this muscle?
Action- retracts scapula, depresses glenoid
Innervation - ventral rami of C3 and C4) sometime twigs of C5
What are the Muscle s of the Modified axial muscle? (Third layer)
Splenius Capitus
Splenius Cervicus
Serratus Posterior Superior
Serratus Pasterior Inferior
Name the Muscle?
Orgin?
Insertion?
Splenius Capitis
Orgin- Nuchal Ligament, Spinous process CIII - CVII
Insertion - Lateral nuchal line of ossipital Bone, Mastoid process of temporal bone
Name the Action and Innervation of this Muscle?
Action- Bilateral extension of cervical spine and head, Unilaterally flex and rotates head to the same side
Innervation- Spinal nerve C1-C6
Name the muscle?
Orgin?
Insertion?
Splenius Cervicus
Orgin- spinous process T1-T6
insertion - transverse process C1-C2
Name the Action and innervation of this muscle?
Action-Bilatterally extends cervical spine and head, Unilatterally flexes and rotate head to same side
Innervation- Spinal nerve
Name the muscle?
Orgin?
Inseertion?
Serratus Posterior Superior
Orgin- Nuchal ligament, spinous process C7-T3
insertion-2-4
What are the actions and innervation of this muscle?
Action- Elevate ribs
innervation- Spinal Nerves T2-T5
Unfortunate drug-drug interactions of TPV and BOC?
They interfere with ARVs for HIV, and calcineurin for transplant patients. (which, obviously, co-occur with HCV a lot)
Name the Muscle?
Orgin?
Insertion?
Serratus Posterior Inferior
Orgin - spinous process T11- L2
insertaion- ribs 8-12
What are the actions and innervation of this muscle?
Action- Depresses ribs
innervation - spinal nerves T9-T12
What are the muscles of the fourth superficial epaxial Mucles?
(Erector Spinae Muscles)
Iliocostalis
Longissimus
Spinalis
Name the muscle?
Orgin?
Insertion?
Iliocostalis(cervicis)
Orgin - Ribs 3-7
insertion - Transverse process of C4-C6
Name the action and innervation of this muscle?
Bilaterally extends spine
Unilaterally bend spine laterally to same side
innervation - spinal nerves (C8 -T1)
Name the Muscle?
Orgin?
Insertion?
Iliocostalis(Thoracis & Lumborum)
Orgin - ribs 7-12
Insertion - transverse processes of lumbar verterbrae, ribs 6-12
Name the action and innervation of this mucsle?
Action- bilaterally extends spine and
unilaterallybend spine to one side
Innervation- spinal nerves C8-T1
Name the muscle?
Orgin?
insertion?
Longissimus capitus
Orgin - transverse process of C4-T3
Insertion - mastoid process of temperol bone
What is the action and innervation of this muscle?
Bilaterally extends head and spine and unilaterally bend spine to one side
Innervation- spinal nerves C1-T5
What is this muscle?
Orgin?
Insertion?
Longissimus Cervicis
Orgin - transverse process of T1-T6
insertion- Tranverse process of C2-C5
What is the action and innervation of this mucsle?
Action- bilaterally extends head and spine and unilaterally bend spine to same side
Innervation - spinal nerves (C1-T5)
What is this muscle?
orgin?
insertion?
Longissimus Thoracis
orgin- Sacrum iliac crest, spinous process of lumbar, tranverse process of lower thoracic
Insertion- ribs 2-12, costal process of of lumbar, transverse process of thoracic
What is the action and innervation of this muscle?
Bilaterally extends head and spine and unilaterally bend spine laterally to same side
innervation - spinal nerves (C1-C5)
What is this Muscle?
orgin?
insertion?
Spinalis Cervicus
orgin - spinous process of C5 - T2
insertion- spinous process of C2-C5
What is the action and innervation of this muscle?
action- Bilaterally extends spine and Unilaterally bend spine to same side
innervation - segmental spinal nerves
What is this muscle?
Orgin?
Insertion?
Spinalis Thoracis
orgin- spinous process of T10-L3
insertion-spinous process of T2-T8
What is the action and innervation of this muscle?
Action-Blaterally extend spine and unilaterally bend spine to same side
innervation- segmental spinal nerves
What is the Fifth layer (deeepest epaxial muscle)?
Inerspinales (cervicis and lumborum)
Intertransversarii (Cervicis Anteriores & posteriores) & (Lumborum Mediale & lateralis)
levatores costarum (Brevis & Longi)
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