What are three types of muscle in the body

Abduction

movement of a limb away from the midline of the body

What is the only energy source used to power muscle activity directly

Atp

Tendon

Attaches muscle to bone

Neurotransmitter

Chemical releases by nerve impulse

What is Gravis Disease?

Autoimmune disease caused by shortage of acetylcholine receptors at the neuromuscular junction in adults

Endomysium

Connective tissue surrounding a muscle fiber

muscle fatigue

Muscle will become unable to contract even though it's being stimulated

Antagonists are

Muscles that oppose or reverse movement

atrophy

Muscles waste away due to inactivity

sarcoplasmic reticulum

Network of membranes in skeletal muscle cells that functions in calcium storage

Acetylcholine

a neurotransmitter that stimulates skeletal muscle

Irritability

ability to receive and respond to a stimulus

Contractility

ability to shorten when an adequate stimulus is received

Circumduction

combination of flexion, extension, abduction, and adduction common in a balls Ned socket joints like shoulder

synaptic cleft

A gasp between motor neuron and the muscle fiber it supplies at the neuromuscular junction

Isotonic

Same tone myofilaments are moving

Where is cardiac muscle found?

heart

Synergists

help prime movers by producing the same movement or by reducing undesirable movements

Isometeric

muscles don't shorten myofilaments can't slide

What are the functions of the muscles

produce movement, maintain posture, stabilize joints, generate heat

Which type of muscle can exhibit arrhythmic contractions

Skeletal

What is a fixator muscle?

Specialized synergists stabilize origin of another muscle

What is wryneck and what muscle is affected

Sternicleidomastoid muscles damaged in birth and the muscles spasm

Muscle tone can best be described as:

partial contraction of muscles muscle shortens and movement occurs

What are three types of muscle in the body

skeletal, cardiac, smooth