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
Q
What is “B”?
A
H zone
26
Q
What is “C”?
A
I band
27
Q
What is “D”?
A
A band
28
Q
What is “E”?
A
M line
29
Q
What is “A”?
A
Periosteum
30
Q
What is “B”?
A
Joint Cavity contains synovial fluid
31
Q
What is “C”?
A
Articular (hyaline) Cartilage
32
Q
What is “D”?
A
Fibrous capsule
33
Q
What is “E”?
A
Synovial membrane
34
Q
What is “A”?
A
Epimysium
35
Q
What is “B”?
A
Endomysium (between fibers)
36
Q
What is “C”?
A
Muscle fiber (cell)
37
Q
What is “D”?
A
Fascicle (wrapped by perimysium
38
Q
What is “E”?
A
Perimysium
