Types, Function, Structure Flashcards
1
Q
About how many skeletal muscles are there?
A
> 600
2
Q
% of body mass is skeletal muscle?
A
~ 40%
3
Q
Functions of muscular system
A
- movement
- posture
- heat generation
4
Q
Where are smooth muscles found
A
- walls of hollow organs
- blood/lymph vessels
- respiratory passageways
5
Q
Describe the appearance of smooth muscles
A
- tapered ends
- single, central nucleus
- no striations
6
Q
Purpose of smooth muscle
A
- involuntary
- peristalsis
- regulate opening & closing
7
Q
Describe the appearance of cardiac muscles
A
- branching & interconnected w/intercalated disks
- the single, central nucleus
- lightly striated
8
Q
Purpose of cardiac muscles
A
- involuntary
- pumps blood out heart
9
Q
Describe the appearance of skeletal muscles
A
- long & cylindrical
- multiple nuclei
- heavily striated
10
Q
Purpose of skeletal muscles
A
- voluntary
- movement
11
Q
What are the characteristics used to name muscles?
A
- location
- size
- shape
- action
- direction of fibers
- # of heads
- attachment points
12
Q
Define epimysium
A
tough connective tissue wrapping an entire muscle; hold fascicles together
13
Q
Define fascicles
A
bundles of individual muscle cells
14
Q
define perimysium
A
connective tissue wrapping single fascicle
15
Q
define endomysium
A
connective tissue wrapping single muscle cell
