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;
15 Cards in this Set
- Front
- Back
|
types of muscle tissue |
1. Smooth 2. Skeletal 3. Cardiac |
|
|
Skeletal muscle |
- attached to bone ND skin - striated - multinucleate -long cylindrical cells (fibers ) - VOLUNTARY |
|
|
Skeletal muscle tissue: |
- allows body mobility - contracts rapidly but tires easily - powerful - large range of force |
|
|
Cardiac muscle |
- Heart - striated - uninucleate - branching cells; intercalated discs - INVOLUNTARY |
|
|
Cardiac muscle tissue |
- propels blood into circulation - contracts at steady rate set by heart pacemaker - neural controls allow heart to respond to changes in bodily needs (HR up and down) |
|
|
Smooth muscle tissue |
- Walls of hollow organs - digestive system - NOT striated - INVOLUNTARY - sheets of spindle-shaped cells |
|
|
Characteristics of smooth muscle tissue |
1. Excitability: receive + respond to stimuli 2. Contractility: ability to shorten by stimuli 3. Extensibility: stretch 4. Elasticity: recoil to resist length |
|
|
Functions of the muscle |
1. Movement (bones or fluids) 2. Maintain posture and body position 3. Stabilize joints 4. Heat generation (skeletal muscle) |
|
|
Striated and voluntary |
Skeletal muscle |
|
|
Striated and involuntary |
Cardiac muscle |
|
|
Nonstriated and involuntary |
Smooth muscle |
|
|
Each muscle has |
One nerve, one artery, and one or more veins |
|
|
Connective tissue sheath |
- epimysium: dense Irregular connective tissue (outside muscle) - perimysoum: fibrous connective (sorround fasicles) - endomysium: fine areolar connective tissue (sorround each muscle fiber) |
|
|
Muscles attach to bone .... |
periosteum or perichondrium. - Directly: epimysium fused to periosteum or perichondrium.- Indirectly: connective tissue wrapping extend beyond the muscle as a tendon - Indirectly: connective tissue wrapping extend beyond the muscle as a tendon |
|
|
Sarcolemma |
Plasma membrane of skeletal muscle fiber |
