Muscles Flashcards
1
Q
No striations
Autonomic nervous
Visceral structures
A
Smooth Muscle
2
Q
Only in the heart
Autonomic nervous system
Striations present
Intercalated disc
A
Cardiac Muscle
3
Q
Cranial/spinal nerves
Striated
A
Skeletal Muscle
4
Q
Types of cranial/spinal nerves
A
Red, white, intermediate
5
Q
Muscle function:
A
Move body parts/contents Resist movement Flexion Extension Adduction Abduction
6
Q
Skeletal muscle harnessing:
A
- Muscle fibers attached by sarcolemma to endomysium
- Endomysium continuous with perimysium around muscle bundles
- Perimysium continuous with epimysium
- Epimysium continuous with tendon or aponeurosis
7
Q
Muscle fiber division:
A
Muscle fiber
Myofibrils
Myofilaments
Sarcomeres
Actin
Myosin
8
Q
Sarcotublar system:
A
Sarcoplasmic reticulum
-parallel to myofibrils
T tubules
-transverse to myofibrils
9
Q
Neuromuscular junction:
A
Motor unit- 1:150 vs 1:4 Synaptic gap Acetylcholine (Ach) Sodium ions Depolarization Calcium ions Contraction
10
Q
Contraction:
A
Actin filament
-Tropmyosin
-Troponin
Calcium binds
Actin/myosin bind
