Chapter 7-9 Flashcards
1
Q
Acetylcholine
A
- a compound that occurs throughout the nervous system
- functions as a neurotransmitter
2
Q
Acetylcholinesterase
A
- an enzyme that causes rapid hydrolysis of acetylcholine.
3
Q
Amphiarthroses
A
- A type of articulation
- permits limited motion
4
Q
Anaerobic threshold
A
- Point at which muscle metabolism converts to anaerobic
5
Q
Bursae
A
- Sacs lined with synovial membrane
6
Q
Calcium ions
A
- Ca2+ binds to and activates calmodulin that triggers for muscle contraction
7
Q
Calmodulin
A
- a protein that binds calcium
8
Q
Caveolae
A
- Pouchlike infoldings of sarcolemma
9
Q
Diarthroses
A
- freely movable joints
10
Q
Dystrophin
A
- Links thin filaments to proteins of sarcolemma
11
Q
Femur
A
- Largest and strongest bone in the body
- Length ~ ¼ of person’s height
12
Q
Gomphosis
A
- a form of immovable articulation
- a peg-like part fits into a cavity
13
Q
Humerus
A
Articulates superiorly with glenoid cavity of scapula and inferiorly with radius and ulna
14
Q
Hypertrophy
A
- increase in fiber size
15
Q
Isotonic
A
- muscle shortens because muscle tension exceeds load
16
Q
Muscle fatigue
A
- Physiological inability to contract despite continued stimulation
17
Q
Myoblasts
A
- All muscle tissue develops from myoblasts
18
Q
Suture
A
- line of junction or an immovable joint between two bones
19
Q
Synarthroses
A
- immovable joints
20
Q
Synovial (joints)
A
- Bones separated by fluid-filled joint cavity
21
Q
Ulna
A
- Forms major portion of elbow joint with humerus
22
Q
Unitary
A
- Single-unit smooth muscles have numerous gap junctions (electrical synapses) between adjacent cells that weld them together electrically; they thus behave as a single unit
23
Q
Varicosities
A
- Varicosities (bulbous swellings) of nerve fibers store and release neurotransmitters into diffuse junctions
24
Q
What is “A”?
A
Z disc
25
What is "B"?
H zone
26
What is "C"?
I band
27
What is "D"?
A band
28
What is "E"?
M line
29
What is "A"?
Periosteum
30
What is "B"?
Joint Cavity contains synovial fluid
31
What is "C"?
Articular (hyaline) Cartilage
32
What is "D"?
Fibrous capsule
33
What is "E"?
Synovial membrane
34
What is "A"?
Epimysium
35
What is "B"?
Endomysium (between fibers)
36
What is "C"?
Muscle fiber (cell)
37
What is "D"?
Fascicle (wrapped by perimysium
38
What is "E"?
Perimysium
