Exam 2 Study 1

Dorsiflexion is.. Plantar flexion is..

toes up, toes down(tippy toe)

Supination is.. Pronation is.. Opposition is.

palm up, palm down, finger to thumb

Circumduction is.. Retraction is.. Protraction is..

make circle, pull back, push forward

Excitability is.. Contractactibility is.. Extensibility.. Elasticity..

muscle responding to stimulus, muscle shortening, muscle stretch, muscle recoil

Sacromere is a..

unit of muscle fiber

Thick filaments are called.. Thin filaments are called..

myosin, actin

Sarcoplasm contains..

granules of stored glycogen (glycosomes) and myoglobin(O2 binding protein)

Dark A band is..

overlapping myosin and actin

Light I band is..

ONLY actin

Sarcoplasmic reticulum does what?

stores and releases Ca2+ ions

Tubueles help..

electrical signals travel through muscle quickly

Where is myosin anchored?

Center of A band, M line

What separates one sarcomere from another?

Z disc

The H zone in the A band has ONLY

myosin

List the ADductors on the thigh from pubis to femur laterally to medially:

obturator externus, (brevis, pectineus, gracilis), longus, magnus(2)

What is under the biceps brachii? main role?

brachialis, elbow flexion

biceps short head is from.. long head is from..

coracoid process of scapula, supraglenoid tubercule of scapula

Triceps Long head is from BLANK, Lateral head from BLANK, Medial head from BLANK

scapula, posterior humerus ABOVE radial groove, BELOW radial grove

The Masseter BLANK, the Orbicularis Oculi BLANK, and the Orbicularis Oris BLANK

closes jaw, closes eye, purses lips

List the hand Extensors medially to lateral:

capri ulnaris, digiti minimi, digitorum, carpi radialis brevis, carpi radialis longus

List the 3 erector spinae muscles from lateral to medial:

iliocostalis, longissimus dorsi ,spinalis dorsi

Teres major is the synergist of BLANK, minor is the synergist of BLANK. which is superior?

lats, infraspinatous, minor

Rhomboid (major/minor) is superior than (major/minor). They aid in BLANK

minor, major, stabilize and pulling scapula medially

What is that fat square thing at the distal end of wrist? (deepest) Does what?

pronator quadratus, pronates

The Iliopsoas is composed of 2 muscles: 1.Iliacus from BLANK, 2. Psoas major from BLANK, both inserts around BLANK

iliac crest, lumbar spine, lesser trochanter

What is the Longest muscle?

sartorius

The IT band aka BLANK is a BLANK

iliotibular band, fiberous layer of CT that runs laterally

List the 4 quad femoris muscles from most lateral to medial:

vastus lateralis, rectus femoris, vastus medialis, vastus intermedius(under)

List the3 hamstring muscles from most lateral to medial:

biceps femoris, semitendinous, semimembranous

Gluteus min/med does BLANK, max does BLANK

medially rotate thigh, laterally rotate thigh