Muscle Types
The three types of muscle tissue are....
Cardiac, smooth, skeletal
Msucles fibers are...?
The muscular system controls...?
Movement, posture, joint stability, heat production
Actin is...?
A thin filament protein involved in contraction
The Ameoba Sisters video/Blooket was about...?
Muscle tissue, sliding filament theory, contraction
Which muscle type is involuntary and found in the digestice tract?
Smooth muscle
Muscle tissue is made up of...?
Muscle fibers (Cells), connective tissue, blood vessels, nerves
What are the four characteristics of muscle tissue?
Excitability, contractility, extensibility, elasticity.
Myosin is...?
A thick filament protein that pulls actin to contract muscles
Which muscle is known as the "calf muscle"?
Gastrocnemius
Which muscle type is striayed and voluntary?
Skeletal muscle
What does skeletal muscle attach to?
Bones (via tendons)
Smooth muscles can be found in...(More than one applies)
Stomach, intestine, blood vessels, bladder, uterus
Thick & thin filaments DO NOT...?
shorten; they slide past each other
Which muscle is the largest in the body?
Gluteus maximus
Which muscle type has intercalated discs and only one nucleus per cell?
Cardiac muscle
Name the connective tissue layers that surround muscles (3).
Epimysium, perimysium, endomysium
What is the role of skeletal muscle in movement?
To pull on bones and create movement at joints
What forms the repeating contractile units in a myofibril?
Sacromeres
What muscle is called the "six-pack"
Rectus abdominis
What are the main differences between voluntary and involuntary muscles?
Voluntary= controlled consiously; involuntary= automatic
They're named using which type of root words? (More than one applies)
Location, shape, size, direction, number of origins, action
What is the difference between a prime mover and a synegrist?
Prime mover= main muscle for movement; Synergist= assists prime mover
Which molecule supplies energy for muscle contraction?
ATP
What neurotransmitter is released at the neuromuscular junction?
Acetylcholine (ACh)