Neuromuscular System Flashcards
Comprised of nerves and muscles
Neuromuscular System
Long bundles of axons that transmit signals from central nervous system
Nerves
Controls involuntary actions incl. cardiac and smooth muscle
heart rhythm
Digestion
Breathing
Autonomic Nervous System
Makes skeletal muscles do a deliberate action
Voluntary nervous system
transmits signals to the next cell using neurotransmitters
Axon terminal
The space between axons that facilitates the transmission of electrical signlas
Synapse
Send messages out to the muscles
Motor nerves (efferent)
Send messages to the central nervous system
Sensory nerves (afferent)
Send and receive signals in the neuromuscular system
Nerves
Often attached to the bone, involved in movement of bones
Skeletal muscles
Muscles found in the heart
Cardiac muscles
Muscles found in the stomach, blood vessels, and intestines
Smooth Muscles
contain long myofibrils made of sarcomere units
Muscles
Long strands of protein (thin filaments)
Actin
Long strands of protein (thick filaments)
Myosin
powers muscle contractions
Adenosine Triphosphate (ATP)
when filaments bind/pull together this occurs
Muscle contraction
in this state, myosin and actin filaments are not attached
Relaxed muscle
can disrupt signal and response between nerves
Muscular disorders
responsible for all muscle movement
Skeletal muscle
byproduct of pyruvic acid when there is not enough oxygen for aerobic respiration; contributes to muscle fatigue and pain
Lactic acid
