Muscle Flashcards
1
Q
What structure connects muscles to bones?
A
Tendons
2
Q
What is the name of the basic contracting unit of skeletal muscle?
A
sarcomere
3
Q
What cells have multiple nuclei?
A
skeletal
4
Q
What muscle provides the primary movement?
A
agonist
5
Q
What is unique about cardiac muscles?
A
They contract on their own but will beat simultaneously when in a group.
6
Q
What electrolyte is necessary for contraction of myofibrils?
A
Calcium
7
Q
What structures are the attachment sites for actin and myosin in smooth muscle cells?
A
Dense bodies
8
Q
In a healthy heart, where does the pace at which cardiac muscle cells contract originate?
A
right atrium, specifically the sinoatrial node
