Musculoskeletal System Flashcards Preview

Biology 101 > Musculoskeletal System > Flashcards

Flashcards in Musculoskeletal System Deck (15)
1

skeletal muscle or striated

attaches primarily to bone and is responsible for locomotion, movement, and support of the skeleton
called striated because alernating light and dark bands are visible when examined under a microscope
voluntary

2

smooth muscle

found within the walls of internal organs of the digestive system, urinary system, and blood vessels
involuntary

3

cardiac muscle

only found in the heart
involuntary

4

extensibility

ability of muscle tissue to be stretched without being damaged

5

contractility

ability for muscle to contract

6

elasticity

muscles ability to be streteched, compressed, or distortedand then return to its normal state

7

excitability

the ability to respond to certain stimuli by producuing electrical signals

8

muscular system

refers to the skeletal muscular system which does not includ the smooth and cardaic muscle tissue

9

origin

the point of muscle attachment on the stationary bone

10

insertion

the point of muscle attachment on the mobile bone

11

belly

the fleshy middle portion of the muscle between the orgin and insertion
responsible for doing most of the work during contraction of the muscle

12

antagonistic muscle groups

skeletal muscles that work in groups
they are arranged in opposing pairs
ine pair contracts (prime mover or agonist) while the other pair relaxes (antagonist)

13

synergists

muscle groups that aid movement of prime mover muscles and prevent unwanted movement across intermediate joints

14

fixators

muscle groups that stablize the orgin of the prime mover

15

compartment

group of muscles associated with blood vessels and associated nerves