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