What is origin and insertion of the subscapularis? Innervation? Actions?
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Origin = subscapular fossa of the scapula
Insertion = lesser tubercle of the humerus
Innervation = upper and lower subscapular nerves
Action = medial rotation of humerus and stabilization of the
shoulder joint
What muscles make up the transversospinal group? What are their origin and
insertions? Innervation? Actions?
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The transversospinal group (deep to erector spinae) is
comprised of semispinalis, multifidus, and rotatores.
Origin = transverse processes of all vertebrae
Insertions =
i) semispinalis - spinous processes of cervical and thoracic
vertebrae (spans 4-6 vertebrae)
ii) multifidus - spinous processes of all vertebrae (spans 2-4
vertebrae)
iii) rotatores - spinous processes of all vertebrae (spans 1-2
vertebrae; most prominent in thoracic region)
Innervation = posterior rami of spinal nerves
Action = extension, stabilization, and lateral flexion/rotation
of the vertebral column. Possible proprioceptive function.
What is the cauda equina?
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The bundle of nerve roots extending from the medullary cone.
What is the action of adductor pollicis? What innervates this muscle?
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Action = adduction of thumb
Innervation = deep branch of the ulnar nerve
,Describe the branching pattern of the radial artery in the forearm.
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The radial artery gives off a single branch in the forearm
proximal to the elbow joint known as the radial recurrent
artery.
What is origin and insertion of the flexor carpi radialis? Innervation? Actions?
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Origin = medial epicondyle of humerus
Insertion = base of the 2nd metacarpal
Innervation = median nerve
Action = flexion and abduction at wrist
What is origin and insertion of the subclavius? Innervation? Actions?
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, Origin = junction of 1st rib and its costal cartilage
Insertion = middle third of clavicle on the inferior surface
Innervation = nerve to subclavius
Action = anchors and depresses clavicle, stabilizes clavicle
during movement, and resists dislocation at the
sternoclavicular joint
What is origin and insertion of the palmaris longus? Innervation? Actions?
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Origin = medial epicondyle of the humerus
Insertion = palmar aponeurosis
Innervation = median nerve
Action = flexion at the wrist
Explain the organization of the meninges.
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Origin = subscapular fossa of the scapula
Insertion = lesser tubercle of the humerus
Innervation = upper and lower subscapular nerves
Action = medial rotation of humerus and stabilization of the
shoulder joint
What muscles make up the transversospinal group? What are their origin and
insertions? Innervation? Actions?
,Give this one a try later!
The transversospinal group (deep to erector spinae) is
comprised of semispinalis, multifidus, and rotatores.
Origin = transverse processes of all vertebrae
Insertions =
i) semispinalis - spinous processes of cervical and thoracic
vertebrae (spans 4-6 vertebrae)
ii) multifidus - spinous processes of all vertebrae (spans 2-4
vertebrae)
iii) rotatores - spinous processes of all vertebrae (spans 1-2
vertebrae; most prominent in thoracic region)
Innervation = posterior rami of spinal nerves
Action = extension, stabilization, and lateral flexion/rotation
of the vertebral column. Possible proprioceptive function.
What is the cauda equina?
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The bundle of nerve roots extending from the medullary cone.
What is the action of adductor pollicis? What innervates this muscle?
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Action = adduction of thumb
Innervation = deep branch of the ulnar nerve
,Describe the branching pattern of the radial artery in the forearm.
Give this one a try later!
The radial artery gives off a single branch in the forearm
proximal to the elbow joint known as the radial recurrent
artery.
What is origin and insertion of the flexor carpi radialis? Innervation? Actions?
Give this one a try later!
Origin = medial epicondyle of humerus
Insertion = base of the 2nd metacarpal
Innervation = median nerve
Action = flexion and abduction at wrist
What is origin and insertion of the subclavius? Innervation? Actions?
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, Origin = junction of 1st rib and its costal cartilage
Insertion = middle third of clavicle on the inferior surface
Innervation = nerve to subclavius
Action = anchors and depresses clavicle, stabilizes clavicle
during movement, and resists dislocation at the
sternoclavicular joint
What is origin and insertion of the palmaris longus? Innervation? Actions?
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Origin = medial epicondyle of the humerus
Insertion = palmar aponeurosis
Innervation = median nerve
Action = flexion at the wrist
Explain the organization of the meninges.
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