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;
31 Cards in this Set
- Front
- Back
|
Skeletal muscle description |
Striated Voluntary Multinucleated Somatic innervation |
|
|
Cardiac muscle description |
Striated Involuntary Autonomic innervation 1-2 nuclei Myogenic activity |
|
|
Smooth muscle description |
Not striated Involuntary Autonomic innervation Uninucleated Myogenic activity |
|
|
Vague nerve provides PNS outflow |
To the heart and slows heart rate |
|
|
The adrenal medulla secretes epinephrine and increases __________ levels to increase heart rate |
Calcium |
|
|
Thick filaments in the sarcomere |
Myosin |
|
|
Thin filament in a sarcomere is |
Actin |
|
|
2 proteins that act along with actin |
Troponin and tropomyosin |
|
|
Z-line |
The boundaries of the sarcomere |
|
|
M-Line |
Middle of the sarcomere |
|
|
I-Band |
Only the thing filaments (actin) |
|
|
H-band |
Only thick filaments (myosin) |
|
|
A-band |
ALL of the thick filaments and the overlapping thin filament |
|
|
Sarcomeres are attached to the end of _________, which are surrounded by the ____________ |
Myofibrils; sarcoplasmic reticulum |
|
|
Sarcoplamsic reticulum is encased in the __________ |
Sarcolemma |
|
|
Endochondral ossification |
Hardening of cartilage into long bone |
|
|
Intramembranous ossification |
Undifferentiated embryonic connective tissue that transforms into bone (ie baby’s skull) |
|
|
Synovium secretes |
Synovial fluid |
|
|
Muscle contraction path |
Release of Ach from motor neuron-> sarcolemma Ach receptors->depolarization->T-tubules-> release of Ca2+ from SR->binds to troponin->tropomyosin shifts->myosin binds |
|
|
ATP is needed flr |
Releasing myosin from actin |
|
|
ADP + Pi responsible for |
Power stroke (contraction) |
|
|
Acetylcholine is degrades by |
Acetylcholinesterase: it stops action potentials and repolarizes |
|
|
Tetanus |
Entire muscle undergoes rapid simple twitch until a muscle can’t relax |
|
|
Axial skeleton |
Provides central framework (skull, vertebrae, rib cage, chest) |
|
|
Appendicular skeleton |
Limbs |
|
|
Osteoblasts |
Build up bone/release calcium |
|
|
Osteoclasts |
Chew/resorb bone |
|
|
Haversian canals |
Vertical/parallel channels |
|
|
Volksmann canals |
Perpendicular/transverse |
|
|
Sarcolemma |
Basically the plasma membrane of muscles; it’s encased in endomysium |
|
|
Muscle fibers divided longitudinally into subunits known as |
Myofibrils |
