Exam 1 Flashcards
Sagittal plane
Dividing the midline (face) in half
Parasaggital
dividing the midline, but away from center
Coronal/frontal
Perpendicular to sagittal, divides the side in half
Transverse/Axial/Horiziontal
Divides the body in to top and bottom.
Pronation
Rotating hand so that palm is now facing down
Supination
Rotating the hand so that the palm is now facing up.
Definition of back:
Body from base of sKull to illac crest
Where is the superior angle of scapula?
T1-T2
Where is the inferior angle of Scapula?
T7
Where is the illiac crest located in reference to the spine?
T7
Erector Spinae
Innervation: Dorsal Rami of spinal nerves
Function: keeping erect posture
Thoracolumbar Fascia
Continous with aponeurosis of Latissimus Dorsi
Muscles of the back acting on ribs for respiration
Serratus posterior superior
Serratus posterior inferior
Suboccipital Triangle
Borders: Rectus capitis posterior major Obliquus capitis superior Obliquus capitis inferior Contents: Suboccipital nerve Vertebral artery
Trapezius
Innervation: CN XI
Origin: C7-T12, External occipital protuberance
Insertion: Lateral clavicle, Acromion, Spine of Scapula
Action: Elevates, Retracts, Depresses, and rotates scapula upward
Latissimus Dorsi
Innervation: Thoracodorsal
Origin: T7-L5, Iliac crest
Insertion: Intertubular groove of humerus
Action: Extends, adducts, and medially rotates humerous
Serratus Anterior
Innervation: Long Thoracic
Origin: Upper 8 ribs
Insertion: Medial border of scapula
Action: Rotate scapula upward, pulls toward anterior thoracic wall (retraction)
Greater Occipital nerve
Origin: C2
SMB: Sensory
Innervation: Upper half of skin in back
Thoracodorsal
Origin: C6, C7, C8
Long thoracic
Origin: C5, C6, C7
Dorsal Scapular
Origin: C5
Rhomboid Minor
Innervation: Dorsal scapular
Origin:Minor: C7-T1.
Insertion: Medial border of Scapula
Action: Retract scapula
Rhomboid Major
Innervation: Dorsal scapular
Origin: Major: T2-T5
Insertion: Medial border of Scapula
Action: Retract scapula
Triangle of auscultation
Borders: Trapezius Latissimus dorsi Scapula Contents:
Triangular Space
Borders: Teres Major Teres Minor Long head of Triceps Contents: Scapular Circumflex artery
Lumbar Triangle
Borders: Latissimus dorsi External Abdominal Oblique Illium Floor: internal abdominal oblique (herniations occur often here)
Quadrangular space
Borders: Teres Major Teres Minor Long head of triceps Humerus Contents: Axillary nerve Posterior Circumflex humeral artery
Cervical Vertebrae
C1(Atlas): no body or spinous process. C2: Dens, bifid SP C3-C7: Bifid SP, Transverse foramen, C7: LOOONG spinous process Facets: superior and inferior facing
Thoracic Vertebrae
Costal facets (articulation with ribs, on transverse process and body) Posterior facing articular process Spinous process points down
Lumbar Vertebrae
Long, slender transverse process
Accessory processes
Articular facets face medially
Sacral Vertebrae
Fused
Articulate with coxal bones
Coccygeal vertebrae
4
Intervertebral discs
C2-L5
Annulus fibrosus
Nucleus pulposus
Primary Curvature
Thoracic (anteriorly)
Sacral (anteriorly)
Secondary Curvatures
Cervical (posteriorly)
Lumbar (posteriorly)
Kyphosis
Exaggerated primary (hunch back)
Lordosis
Exaggerated secondary (swayback)
Scoliosis
Lateral deviation of lumbar collumn
Spine ligaments from Anterior to posterior
Anterior longitudinal Posterior longitudinal Ligamentum flavum Interspinous Supraspinous
Dentate ligaments
Lateral extensions of Pia mater
Makes the filum terminal internum
Deep fascia
Pectoral Fascia
Axillary Fascia
Clavicpectoral fascia
Suprascapular Notch
Suprascapular Artery and nerve (Army over Navy under/Anybody over Notre Dame)
Triangular Interval
Border: Teres Major long head of triceps lateral head of triceps contents: Profunda brachii Radial nerve
Pectoral Fascia
Superior border: clavicle + sternum
Inferior: Fascia of abdominal wall
Invests into pectoralis major
Axillary Fascia
Continuous with Pectoral fascia laterally
Forms floor of axilla
Clavipectoral
Deep to Pec. Major
Comes from clavicle
Encloses subclavius and pec minor
becomes supensory ligament of axilla
Dermatones C5
Clavicles
Dermatones T4
Level of niples
Dermatone T10
Level of umbilicus
Dermatone T1
Goes down medial/center part of arm
Supraclavicular nerve
Origin: C3-C4
Location:anterior to clavicle
Supplies skin of clavicle
Superior Lateral Brachial Cutaneous nerve
Origin: C5-C6
Cutaneous branch of Axillary nerve
Supplies skin over deltoid
Clavicle Attachments
Superior surface: Sternocleidomastoid Trapezius Deltoid Subclavius
Pectoralis Major
Innervation: Lateral and Medial pectoral nerve
Origin: Medial clavicle, sternum
Insertion: Intertubercular groove of humerus
Action: Adductor and medial rotator of humerus
Key: two heads
Pectoralis Minor
Innervation: Medial pectoral nerve
Origin: Ribs 3-5
Insertion: Coracoid process
Action: Depress and protract scapula
Subclavius Muscle
Innervation: Subclavius nerve
Origin: First rib
Insertion: Clavicle (inf.)
Action: Stabilize clavicle
Deltoid Muscle
Innervation: Axillary nerve
Origin: Lateral third of clavicle, acromion, spine of scapula
Insertion: Deltoid tuberosity
Action: Anterior: Flex and medially rotate arm. Middle: Abducts arm (top 85%). Posterior: Extends and laterally rotates arm
Teres Major
Innervation: Lower subscapular nerve
Origin: Inferior border of scapula
Insertion: Intertubercular groove of humerus
Action: Adducts arm. Medially rotates shoulder.
Teres Minor
Innervation: Axillary nerve
Origin: Lateral border of scapula
Insertion: Greater tubercle of humerus
Action: Laterally rotates arm. Holds humerus in glenoid cavity
Rotator cuff muscles
SItS Supraspinatus Infraspinatus Teres minor Subscapularis
Supraspinatus
Innervation: Suprascapular nerve Origin: Supraspinous fossa Insertion: Greater tubercle Action: Helps adduct arm w/ Deltoid (bottom 15%) Rotator cuff muscle
Infraspinatus
Innervation: Suprascapular nerve Origin: Infraspinous fossa Insertion: Greater tubercle Action: Lateral rotation of arm. Holds Humerus in glenoid cavity. Rotator cuff muscle
Subscapularis
Innervation: Subscapular nerve (upper and lower) Origin: Subscapular fossa Insertion: Lesser tubercle Action: Medial rotation of the arm Rotator cuff muscle
Axilla
Contents: Axillary Artery Lateral Cord Posterior Cord Medial Cord Axillary lymph nodes
Axillary Artery Branches
From: Subclavian
Becomes: Brachial Artery
Branches:
Part 1 (1): Rib1-Pec minor
Superior thoracic artery
Part 2 (2): Under pec. minor
Thoracoacromial trunk
Lateral Thoracic Artery
Part 3(3): Lat. Pec. Minor to inf. Teres Major.
Subscapular Artery
Anterior Circumflex humeral artery
Posterior Circumflex Humeral artery
Subscapular artery
From the third part of Axillary artery.
Divides into:
Circumflex scapular artery
Thoracodorsal artery.
Posterior Circumflex Humeral Artery
Branch of axillary artery, passes through quadrangular space.
What glands are on the areolae?
Sebaceous glands (glands of Montgomery)
What is the lobule?
Functional unit of the breast tissue.
Drained by single lactiferous duct.
How many individual lobules per breast?
15-20.
What is the suspensory ligament of Cooper?
Gland connecting skin to superficial fascia, separating the glandular tissue.
Arterial supply to breasts?
(medial) Internal Thoracic
Lateral thoracic
Posterior intercostal
Venous drainage of the breast?
Axillary vain
Cutaneous innervation of breasts
4th to 6th intercostal nerves.
Lymphatic drainage of breasts
Has role in metastasis.
Most lymph drains to the axillary lymph notes.
CLASP
Central, lateral, Apical, Subscapular, and Pectoral nodes
Frequency of breast cancer in breast
Superior lateral > areolar. Superior Medial > Inferior lateral > inferior medial
Rectus capitis posterior major
Innervation: Suboccipital (C1)
Origin: Spinous process of axis
Insertion: Inferior nuchal line
Action: Ipsilateral rotation, extension
Rectus Capitis posterior minor
Innervation: Suboccipital nerve
Origin: Posterior arch of atlas
Insertion: Inferior nuchal line
Action: Extension
Obliquus capitis Superior
Innervation: Suboccipital nerve
Origin: Transverse process of atlas
Insertion: Inferior nuchal line
Action: Abduction and extension
Obliquus capitis inferior
Innervation: suboccipital nerve
Origin: Spinous process Axis (C2)
Insertion: Transverse process of atlas (C1)
Action: Rotates head to contracted side.
Transverse suprascapular ligament
Over Great Scapular Notch
Over: Suprascapular artery
Under: Suprascapular nerve
What inserts on greater tubercle?
Supraspinatus (only one that does not laterally rotate)
Infraspinatus
Teres minor
What inserts on lesser tubercle?
Subscapularis
What inserts on intertubercular fossa?
Latissimus Dorsi
Teres Major
Pectoral Major
Anastomosis
Circumflex Scapular Suprascapular artery
Anterior circumflex humeral artery posterior circumflex humeral artery