Types of Muscle
3
What is the number of muscle types in the human body?
What consists of bundles of tiny fibers that run the length of the muscle?
To contract, a skeletal muscle must be stimulated by a nerve, specifically a...
What is a motor neuron?
To move a body part.
What is the role of the muscle?
What are superficial muscles?
Cardiac Muscle
What muscle type is only found in the heart?
Myofibrils
What are long protein bundles that fill the sarcoplasm?
The connection between a motor neuron and a muscle fiber is called...
What is a neuromuscular junction?
This refers to the end of the muscle that attaches to the more stationary bone.
What is the origin?
Sternocleidomastoid and trapezius
What are the muscles that move the head?
Smooth Muscle
What is the type of muscle found in the digestive tract, blood vessels, bladder, airways, and uterus?
Transverse (T) Tubules
What allow electrical impulses to travel deep into the cell?
The space between the motor nerve and the muscle fiber.
What is the synaptic cleft?
Strength training causes muscles to enlarge. This is known as
What is hypertrophy?
External intercostals, diaphragm, and internal intercostals
What are the muscles that help us breathe?
Skeletal Muscle
What is the type of muscle attached to bone and causes movement of the body?
Actin
What is the protein that makes thin myofilaments?
The chemical messenger that is released into the synaptic cleft.
What is acetylcholine (ACh)?
The main muscle that triggers movement.
What is the prime mover?
quadriceceps femoris
What is the most powerful muscle in the body?
Contracts automatically
What is an involuntary muscle?
Thin and thick myofilaments stacked together in a lattice type structure.
What is a sarcomere?
When nerve impulses stop arriving at the neuromusclar junction, ACh is no longer released. This enzyme breaks down the leftover ACh.
What is acetylcholinesterase?
These oppose the action of the prime mover.
What are antagonists?
biceps femoris, semitendinosus, and semimembranosus muscles
What are the muscles that form the hamstrings?