CH 12 Upper appendicular muscles Flashcards
1
Q
how many skeletal muscles
A
700
2
Q
- 3 types of muscle tissue
A
- Skeletal
- Smooth
- Cardiac
3
Q
- Each organ has 4 tissue types
A
- Skeletal muscle tissue
- Connective tissue
- Nerve tissue
- Blood or vascular tissue
4
Q
Skeletal muscle
A
- Muscle is made of fascicles
- A fascicle is a bundle of fibers (cells)
- Muscle fibers contain myofibrils
5
Q
- Myofibrils
A
- Composed of myofilaments
- Actin (thin)
- Myosin (thick)
6
Q
Skeletal muscle organization levels
A
- Muscle
- Fascicle
- Muscle fiber
- Myofibril
- Myofilament
7
Q
Muscle
A
- Whole circle
- Covered with epimysium
8
Q
- Fascicle
A
- Small circle in the big circle
- Covered with perimysium
9
Q
- Muscle fiber
A
- Third circle
- Covered in endomysium
10
Q
- Myofibril
A
- Long cylindrical contractile element of muscle fiber
- Not covered w connective tissue
11
Q
- Myofilament
A
- Short contractile proteins of thick and thin myosin and actin
- No connective tissue covering
12
Q
- Connective tissue components
A
- Superficial fascia
- Deep fascia
13
Q
- Superficial fascia
A
- Separates muscle from skin
- Areolar and adipose tissues
14
Q
Deep fascia
A
- External to epimysium
- Bind muscles with similar functions
- Dense irregular connective tissue with vessels and nerves
15
Q
- Compartment syndrome
A
- Swelling of muscles causing compression of nerves and vessels
16
Q
Where does muscle attach
A
Tendon
17
Q
Tendon
A
- Attaches muscle to bone, skin, or other muscle
- Rope likfe structure
- Some form aponeurosis
18
Q
- Muscle fiber organization form 4 patterns
A
- Circular
- Mouth
- Convergent
- Pectoralis major
- Parallel
- Extensor digititorum longus
- Pennate
19
Q
- Actions of skeletal muscle
A
Agonist
Antagonist
Synergist
20
Q
Agonist
A
- Contraction produces the movement
- “Prime” mover
- Tricep contract
21
Q
- Antagonist
A
- Muscle whose action opposes an agonist
- Bicep relax
