Muscle Tissues
smooth skeletal and cardiac
What are the three types of muscle tissue?
your body consists of how many muscles?
What is 600?
breathing is what type of muscle contraction
Isotonic contraction
The smallest of muscle fibers are known by this name
what are myofilaments
a motor unit is made up of these three structures
what are motor neuron, neuromuscular junction, and muscle fiber
visceral and involuntary
What are two other names for smooth muscle?
What percent of your body weight is made up of muscle?
What is 40%
the minimal level of stimulation required to cause a fiber to contract
What is threshold stimulus
the basic functional (contractile) unit is known as this
What is a sarcomere?
the specialized point of contact between a nerve ending and the muscle fiber is known as
what is the neuromusclular junction
posture, heat, and movement
What are the three main functions of the muscular system
What is the difference between aerobic and anaerobic exercise
Aerobic needs or uses Oxygen , whereas anaerobic occurs w/o oxygen
a more steady response that is produced by a series of stimuli bombarding the muscle in rapid sucession
What is a tetanic contraction
this theory explains how a muscle contract
what is the sliding filament theory
the specialized nerve that transmits an impulse to a muscle causing contraction
motor neuron
this muscle type is shorter, tapered on the ends, and has a single nucleus
What is smooth?
The largest muscle in the human body
What is. the gluteus maxmimus
acetylcholine
What is the neurotransmitter need in a contraction
the thick filaments are known as _________ and the thin filaments are know as _______
what are myosin and actin
the axon terminal, the synapse, and the muscle fiber
What are the parts of the neuromuscular junction
the name for when a muscle is not used it may get smaller over time
What is atrophy
movement of the body is caused by shortening of mucles fibers changing this type of energy to this type of energy
chemical energy (food) to mechanical energy
All or None
Individual muscle fibers respond ___all or none__to a threshold stimulus
muscles must be stimulated by this before a muscle can shorten and produce movement
what is a nerve impulse
the main ion from the periodic table that needed for muscle contraction
What is calcium