Muscles: What type?
Name the type of muscle tissue that is not striated and is involuntary.
What is smooth muscle?
This type of filament is thin and makes up the I band.
What is actin?
A neurotransmitter associated with muscle contraction.
What is acetylcholine?
Muscle used for protracting the scapula
What is serratus anterior?
The muscles of the abs are named after what
What is direction of fibers?
Name the type of muscle tissue that is striated and is involuntary.
What is cardiac muscle?
This type of filament is thick and makes up the A band.
What is myosin?
What causes actin to change shape
calcium
Primary muscle for closing the jaw or chewing
Masseter
Name three muscles of the face
(answers will vary)
Name the type of muscle tissue that is striated and is voluntary.
What is skeletal?
Name the contractile unit of a muscle cell.
What is a sarcomere?
This ion from the SR stimulates muscle contraction.
What is calcium?
Name the tough connective tissue that joins skeletal muscles to bones.
What are tendons?
Name the three muscles we discussed that form the quadriceps
vastus medialis, vastus lateralis, rectus femoris
Connective tissue that surrounds a muscle cell
What is perimysium
The part of the sarcomere that only has myosin
What is H zone?
What is is called when myosin attaches to actin (what is formed?)
What is a cross bridge?
(answers vary)
Muscle named after its function of lifting the scapula
What is levator scapulae?
Structure of the skeletal muscle described as long contractile fibers that are made up of thick and thin myofilaments
What is Myofibrils?
A sarcomere is defined as the region between two _____.
What is consecutive Z discs? or Z lines?
What is the first step of muscle contraction is
What is a signal travels down from motor units (neurotransmitter is acetylcholine)
The muscle that flexes the knee.
What is biceps femoris?
List from largest to smallest the structure of a skeletal muscle
Muscle, Fascicle, Muscle cell/fiber, Myofibril, Filament