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What else can I help you with?
What is a similarity between a reflex action and a voluntary action?
Both require motor neurones to carry the nerve impulse to the effector in order for the muscle to contract carry out an action.
Which of the following are specialized cells blood cells muscle cells bone cells all of the above?
All.
How do humans generate heat?
This is from the oxidation of food during respiration in body cell.Any increase activity,muscle action which increase respiration will increase heat production.
What shortens during muscle contraction?
Uponmuscle contraction, the A-bands do not change their length (1.85 micrometer in mammalian skeletal muscle) whereas the I-bands and the H-zone shorten.The protein tropomyosin covers the myosin binding sites of the actin molecules in the muscle cell. To allow the muscle cell to contract, tropomyosin must be moved to uncover the binding sites on the actin. Calcium ions bind with troponin-C molecules (which are dispersed throughout the tropomyosin protein) and alter the structure of the tropomyosin, forcing it to reveal the cross bridge binding site on the actin. The concentration of calcium within muscle cells is controlled by thesarcoplasmic reticulum, a unique form of endoplasmic reticulum. Muscle contraction ends when calcium ions are pumped back to the sarcomere. Once Calcium goes back into the sarcoplasmic reticulum, muscle relaxation starts.During stimulation of the muscle cell, themotor neuronreleases the neurotransmitter acetylcholine which travels across the neuromuscular junction (the synapse between the terminal bouton of the neuron and the muscle cell). Acetylcholine binds to a post-synaptic nicotinic acetylcholine receptor. A change in the receptor conformation allows an influx of sodium ions and initiation of a post-synaptic action potential. The action potential then travels along T (transverse) tubules until it reaches the sarcoplasmic reticulum; the action potential from the motor neuron changes the permeability of the sarcoplasmic reticulum, allowing the flow of calcium ions into the sarcomere. The outflow of calcium allows the myosin heads access to the actin cross bridge binding sites, permitting muscle contraction.Source(s):wikipedia "sarcomere"the sarcomere is the functional unit of the muscle cellutube "sarcomere" would give you a visual Do actin and myosin shorten during muscle contraction?
Neurotransmitter that triggers muscle contraction?
Acetylcholine (ah-Seh-til-KO-leen) is the organic molecule that triggers muscle contractions in humans. Acetylcholine acts on both the central nervous system (CNS) and on the peripheral nervous system (PNS). It is also the principal neurotransmitter in autonomic ganglia.
What is the alzheimers disease pathophysiology?
It is caused by the undersupply of Acetylcholine, a chemical which enables muscle action, learning, and memory.
An antagonist muscle is one that has an action directly opposite to that of the agonist?
protagonist agonist I know because I'm in agony right now.
What caused Raising the arm laterally at he shoulder?
Raising the arm laterally at the shoulder is primarily caused by the contraction of the deltoid muscle. This muscle is responsible for abduction of the arm at the shoulder joint, allowing you to lift your arm out to the side. The action is coordinated by signals from the brain through the nervous system to the muscle fibers.
What muscle that counteracts the action of another muscle?
antagonist muscle
What describes the action of the digastric muscle?
THe action of the digastric muscle is to depress the mandible or evaluate the larynx
Why do you get muscle spasms?
Muscle spasm are caused by due to hyper or hypo stimulation of the peripheral nerves which in turn decrease or increase the action.
Muscle fatigue is caused by a buildup of?
Muscle fatigue is caused by an accumulation of lactic acid in muscles.
What action takes the most muscle in the face?
The frowning action.
Which muscle type is voluntary in action?
The skeletal muscle is the only type of muscle which is voluntary.
In a muscle group the muscle that relaxes during a particular action is what?
gdg
What muscle action does pulling represent?
It represents contracting or shortening of a muscle.
Action of the muscle?
rectus femoris
