Unit 1: Lecture 3 Self-study Flashcards Preview

OT 716 - Unit I > Unit 1: Lecture 3 Self-study > Flashcards

Flashcards in Unit 1: Lecture 3 Self-study Deck (21):
1

Smooth Muscle

walls of hollow viscera (GI tract, blood vessels)

innervation is via the autonomic nervous system.

2

Cardiac Muscle (myocardium)

no innervation is needed, except for regulation of rate, contractile strength

the myocardium has inherent contractility

3

Skeletal Muscle

40% of the body mass in normal adults and is the type of muscle attached to the skeleton for moving and supporting joints.

4

Muscle always ________ across a ________

pulls; joint

5

A muscle always pulls a joint through an ________

excursion

6

Prime Mover

main muscle used in specific muscular action

7

Synergist

assist the prime mover, and compliment its action

8

Fixator

immobilize a joint while another is activated

9

Antagonists

stabilize a joint while the opposite prime movers are contracting, thus preventing undesired actions (dislocation) during movement of the joint

10

Muscle fiber ::

muscle cell

11

Fibers are ___________, with ______ located at the periphery of the fiber (________ _________)

multinucleated; nuclei; syntactical arrangement

12

Epimysium (deep fascia)

the whole sheath around a muscle

consists of collagenous fibers

13

Tendon

relatively avascular structures which muscles use to attach to bone around the joint around which it wishes to move

14

Aponeurosis

(flat sheet of connective tissue)

attachment of muscles to each other

15

Unipennate

muscle fibers approach tendon from one side

16

Bipennate

muscle fibers approach tendon from TWO directions on a flat plane

17

Multipennate

multiples of all pennate forms

18

Circumpennate

muscle fibers approach tendon from all directions

19

Tendons are formed by...

an aggregation of the sarcolemma

20

Proprioception

the sensory aspect of input into the nervous system regarding the status of a muscle at any given time

21

Proprioception provides info for (3):

1. degree of contraction of muscles
2. state of tension in tendon
3. sensory information from joints