ANPH Muscular system: PART 1
Studied by 0 people
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/15
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
16 Terms
What neurotransmitter initiates muscle contraction?
Acetylcholine (ACh)
What ion is released to start contraction?
Calcium (Ca²⁺)
What is a motor unit?
One motor neuron and all the muscle fibers it innervates
What is motor unit recruitment?
the number of motor units active increase to make contraction stronger
What is the origin of a muscle?
Stable, proximal attachment
What is the insertion of a muscle?
Mobile, distal attachment
What is an agonist?
Prime mover that causes the main action
What is an antagonist?
Opposes the agonist
What is a synergist?
Assists the agonist
What is a fixator?
Stabilizes joints during movement
rectus
Fibers run parallel to the midline
maximus
Largest muscle
deltoid
Triangular shape
flexor
Muscle causes flexion (decreases joint angle)
pectoralis
Located in the chest region
biceps
Muscle with two origins
Note 
Flashcards (76)