Show:
The Electric Slide
Muscle, Muscle, Muscle
Muscle Fiber Structure
The NMJ
Muscle Miscellaneous
100
During resting membrane potential (rmp) the concentration of this ion is greater inside a cell
What is potassium?
100
This type of muscle is found only in the heart
What is cardiac?
100
These 2 proteins interact to form crossbridges during contraction
What are actin and myosin?
100
The sarcolemma at the nmj
What is a motor end plate?
100
Contraction that produces tension without changing the length of the muscle
What is isometric?
200
During rmp (resting membrane potential) the outside of the membrane has this type of charge
What is more positive?
200
Compared to skeletal muscle, this type of muscle is slower to contract and slower to relax
What is smooth?
200
This muscle fiber structure stores calcium ions for the formation of crossbridges
What is the sarcoplasmic reticulum?
200
This substance breaks down acetylcholine in the synaptic cleft
What is acetylcholinesterase?
200
Developmental process which causes the number of fast-twitch fibers to decrease at a faster rate than slow-twitch fibers
What is aging?
300
Depolarization of the cell membrane occurs when there is a rapid influx of this ion
What is sodium?
300
The two types of muscle that are autorhythmic
What is visceral smooth and cardiac
300
The cell membrane of a muscle fiber
What is sarcolemma?
300
A motor neuron and all the muscle fibers it innervates
What is a motor unit?
300
Source of ATP during prolonged physical activity
What is aerobic respiration?
400
This ion causes the release of acetylcholine from the end of a motor neuron
What is calcium?
400
Cell structures that allow communication between adjacent cells in cardiac and visceral smooth muscle
What are gap junctions?
400
Law of skeletal muscle that states when a fiber contracts, it contracts completely
What is the all-or-none response?
400
The sodium channels on the sarcolemma that open when Ach binds to their receptor are an example of these channels
What are ligand-gated channels
400
Minimal stimulus needed to cause a contraction
What is threshold?
500
This ion exposes binding sites on actin so that myosin can bind to cause contraction
What is calcium?
500
This muscle type has striations, is multi-nucleated, and is under voluntary control
What is skeletal muscle?
500
An example of a partial, but sustained, contraction in which various muscle fibers within the muscle are able to experience relaxation
What is muscle tone?
500
The end of a motor neuron that synapses with a muscle fiber
What is an axon, or presynaptic, terminal?
500
Activities such as long distance running stimulate the development of these
What are slow, red muscle fibers