Anatomy Flashcards
Known as the SITS muscles and muscles of the rotator cuff
Teres Minor and Infraspinatus perform sthe same action of lat rotate, abdduct and stablizing the shoulder, p.75
supraspinatus,infraspinatus,teres minor and subscapularis
SITS
A: adduct/elevate/downward rotation of scapula
O: spinous process t2-t5;c7-t1
I; medial border of scapula between the spin, upper port of medial border of scapula
Rhomboids
A:Extend the head and neck, lat flex head neck, rotate head and neck elevate scapula, retracts, stablize adduct the scapula elevation and depression of the scapula
O: Occipital proturberance, nuchal line
I lateral one third of clavicle and acromion spine of scapula
Trapeziusp.69
well developed in superheroes lies along the rib cage abducts the scapula and antagonist to the rhomboids
A: abduct/upward rotate/depress the scapula
O: external upper eight or nine ribs
I: medial part of scapula anteriorly
Serratus Anterior
raises first tow ribs, assst in neck flexion; inserted at 1st and 2nd rib, lateral side of neck
Scalenes
only rotator cuff muscle that attaches to the lesser tubercle of the humerus, rotates the shoulder medially; between scapula and rib cage
Subscapularis
superficial of the spine
runs from the sacrum to the occiput along the posterior aspect of the vertebral column
includes iliocostalis, longissimus and spinalis(Lateral–>Medial)
I love sphaghetti
Erector Spinae group
located on the lateral an anterior aspects of the neck, large belly with two heads attaches to mastoid process, carotoid artery lays deep, Lord Byron fashion
A: Laterally flex and rotate the head for opposite side, flex the neck and elevation of ribcage during inhalation
O: Sternal head: top of manubrium; Clavicular head: medial 1/3 of the clavicle
I: Mastoid process of temporal bone and lateral portion of superior nuchal line of occiput
N: spinal accessory nerve XI
Muscles to work:
Levator scapula, scalenes and upper traps
Sternocleidomastoid
both located on forearm
located on anterior medial side
located on posterior lateral side
Review Chapter 3
Flexors
Extensors
Six main muscle groups in the forearm
Flexor Capri, flexor digiti, flexor pollicis and extensor carpi ,extensor digiti and extensor policies
all on the radial nerve
4 extensors create extension primarily at the wrist and fingers
Extensors
lateral/posterior to the brachioradialis
known as the Wad of Three
A: to the extend and abduct the wrist; assist to flex the elbow
O: Longus: distal one-third of the lateral supracondylar ridge of humerus; Brevis: common extensor tendon from the lateral epicondyle of humerus
I: Longus: Base of second metacarpal Brevis: Base of the third metacarpal
N: Longus: Radial
Brevis: Radial
BRACHIORADIALIS and Extensor Carpi Radialis Longus and Brevis
flexes the wrist
carpi
flexes digits
digiti
part of superficial layer sometimes absent, runs between
flexor carpi radialis and flexor carpi ulnaris
attaches to the aponeurosis
absent in 11% of the population
Palmaris Longus
anterior surface of the forearm, tucked b/t brachioradialis and forearm flexors; antagonist to the biceps branchi and supinator
A: Pronate the forearm(radioulnar joint) flex elbow
O: common flexor tendon from medial epicondyle of the humerus and coronid ulna
I: middle lateral of radius
N: Medial
pronator Teres
small pronator A: Pronates the arm O: medial/anterior of distal ulna I:Lateral anterior surface distal radius N: Medial
pronator Quadratus
located on the lateral side of the elbow; short deep in forearm extensors & superficial to the head of the radius
antagonist to pronator teres
A: Supinate the forearm
O: lateral epicondyle of humerus, radial collateral ligment, annular ligament and supinator crest of the ulna
I: Anterior, lateral surface of proximal one-third of radial shaft
N: Radial
Supinator
known as a holster
Flexor Retinaculum
four short muscles located here thumb pad abductor pollicis brevis flexor pollicis brevis opponens pollicis adductor pollicis
Thenar eminence
pinkie pad
hypothenar Eminence
his muscle is responsible for hiccups basically spasms
Diaphragm
Name the three holes of the Diaphragm
And what are they for?
Abdominal Aorta, Vena Cava Foramen and Esophageal hiatus
Abdominal Aorta-away,
Attachment site for the diaphragm
Central Tendon
nerve that feeds the diaphragm
Phrenic Nerve
smallest of the erector spinae group and lies closest to the spine in the lamina groove
Only one attaches to the spinous process
spinalis
assist in extension,lateral flexion, and rotation of the head and neck to the same side
longissiumus and iliocostalis
Six muscles located deep to the gluteus maximus and create lateral rotation of the hip
-all attach to the aspects of the trochanter and medially to the sacrum and pelvis
Piriformis,
Quadratus Femoris,
Obturator Internus,
Obturator Externus,
Gemellus Superior, and Gemellus Inferior
Deep Six or Lateral Rotators of the Hip
Fifth adductor
lies superficially on the medial thigh
is the only adductor that crosses the knee
O: inferior ramus of pubis
I: Proximal, medial shaft of tibia at pes anserinus tendon
semitendons/semimembranous
Gracilis
TFL, small superficial muscle located on the lateral side of the upper thigh
Easily accessible between the upper fibers of the rectus femoris and the gluteus medius,
A: flex, medially rotate, abduct the hip
O Iliac crest, posterior to the ASIS
I iliotibial tract
Tensor Fasciae Latae