Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
57 Cards in this Set
- Front
- Back
|
proteins in cardiac muscle
|
actin, myosin, troponin, tropomyosin
|
|
|
intercalated disc
|
junction of two cardiac muscle fibers
|
|
|
what speeds/slows heart contractions?
|
sympathetic/ parasympathetic nerve impulses
|
|
|
smooth muscle found where?
|
walls of gastrointestinal tract
blood vessels |
|
|
orbicularis oculi (origin & insertion)
|
maxilla & frontal bone
around eye |
|
|
orbicularis oris
|
maxilla, mandible
lips |
|
|
masseter
|
zygomatic, maxilla
mandible |
|
|
sternocleidomastoid
|
sternum, clavicle
temporal, occipital (mastoid process) |
|
|
platysma
|
fascia of chest
lower mandible |
|
|
pectoralis major
|
clavicle, sternum, cartilage of ribs
humerus |
|
|
pectoralis minor
|
sternal ends of upper ribs
scapula |
|
|
rectus abdominus
|
pubic symphysis
sternum (xiphoid process) & ribs |
|
|
external oblique
|
lower ribs
pelvic bones |
|
|
trapezius
|
occipital bone; spines of cervical & thoracic vertebrae
clavicle, scapula |
|
|
latissimus dorsi
|
spinous processes of S,L,T vert.; ilium
humerus |
|
|
deltoid
|
scapula, clavicle
humerus |
|
|
biceps brachii
|
scapula
radius |
|
|
triceps brachii
|
humerus, scapula
ulna |
|
|
gluteus maximus
|
sacrum, coccyx, ilium
femur, fascia |
|
|
biceps femoris
|
ischium, femur
fibula, tibia |
|
|
rectus femoris
|
ilium
patella (tibia) |
|
|
gastrocnemius
|
femur
calcaneus |
|
|
diaphragm
|
sternum (xiphoid process), lower ribs, lumbar vertebrae
central tendon |
|
|
pronator quadratus
|
distal end of ulna
distal end of radius |
|
|
extensor digitorum communis
|
humerus
phalanges |
|
|
flexor digitorum profundus
|
ulna
phalanges |
|
|
sartorius
|
ilium
tibia |
|
|
soleus
|
fibula, tibia
calcaneus |
|
|
supraspinatus
infraspinatus teres minor subscapularis coracobrachialis teres major (Hint: all the same!) |
scapula
humerus |
|
|
traits of smooth muscle
|
unbranched, uninucleated, involuntary, contain atin & myosin, no T-tubules
|
|
|
muscle cells contain ______, which have ______
|
myofibrils
myofilaments |
|
|
view diagram on page 111.
|
NOW!
|
|
|
H band contains which type of myofilament?
|
myosin
|
|
|
I band contains which type of myofilament?
|
actin
|
|
|
A band contains which type(s) of myofilament?
|
actin AND myosin
|
|
|
what masks the binding sites on actin when a muscle cell is resting?
|
tropomyosin
|
|
|
where are Ca++ ions stored in resting muscle cells?
|
sarcoplasmic reticulum
|
|
|
in cardiac muscle, from where does calcium enter the sarcoplasm, in addition to the Ca from the sarc. retic.?
|
from the extracellular fluid, through channels in the T-tubules
|
|
|
in the myofilament system, what does calcium bind to?
|
troponin
|
|
|
the shape of which molecule changes when calcium binds to troponin?
|
tropomyosin
|
|
|
where does ATP bind during muscle contraction?
|
head of myosin
|
|
|
what are sources of ATP?
|
glycolysis & oxidative phosphorylation
some from ADP & creatine phosphate |
|
|
flexor/tensor
|
decrease/increase angle @ a joint
|
|
|
abductor/adductor
|
moves a bone away from/ toward the midline of the body
|
|
|
levator/depressor
|
upward/downward movement
|
|
|
supinator/pronator
|
palm up/down
|
|
|
tensor
|
make muscle more rigid
|
|
|
rotator
|
move bone around longitudinal axis
|
|
|
primary muscle
|
prime mover/agonist
|
|
|
relaxing muscle
|
antagonist
|
|
|
helper muscles
|
synergists
|
|
|
first class levers
|
fulcrum in middle
|
|
|
second class lever
|
out force in middle
|
|
|
third class lever
|
in force in middle
|
|
|
example of first class lever
|
extension of forearm by triceps
lifting of head |
|
|
example of third class lever
|
flexion of forearm by biceps brachii
|
|
|
calculations involving levers (formula)
|
H = (L/I) x S
|
