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smooth muscle

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Anatomy Science

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Last updated

6 years ago

Date created

Mar 14, 2020

Cards (18)

Section 1

(18 cards)

smooth muscle

Front

involuntary muscle found in internal organs

Back

Structure in muscle cells that function in calcium storage

Front

Sarcoplasmic reticulum

Back

Skeletal muscle

Front

striated and voluntary

Back

creatine phosphate

Front

Provides phosphate group for ATP

Back

Function unit of skeletal muscle

Front

Sarcomere

Back

sliding filament mechanism (explanation when done drawing pic)

Front

process of muscle contraction in which shortening occurs by thick and thin filaments sliding past each other

Back

Cardic muscle

Front

heart muscle, striated, involuntary

Back

Draw sliding filament mechanism

Front

Back

Events at the Neuromuscular Junction

Front

The axon tip of an activated motor neuron releases ACETYLCHOLINE into the SYNAPTIC GAP, where it combines with RECEPTORS on the sarcolemma. This stimulates the release of CA2+ from storage areas, which exposes the active sites on THIN(ACTIN) filaments. Cross bridges of MYOSIN attach to the exposed active sites and exert a power stroke, which pulls the THIN filaments and the Z lines toward the center of the A band. This process is rapidly repeated until CONTRACTION is complete.

Back

oxygen debt

Front

temporary lack of oxygen in the muscle due to exertion

Back

sliding filament theory

Front

thin and thick filaments do not become shorter, just slide past each other

Back

function of acetylcholinesterase

Front

breakdown acetylcholine in the synapse

Back

4 functions of muscular system

Front

produce movement, maintain posture, stabilize joints, generate heat

Back

Isotonic

Front

Movement

Back

Muscle tone

Front

continuous state of contraction even when muscle is relaxed

Back

Draw a neuromuscular junction

Front

Back

Isometric

Front

No movement

Back

Energy pathways for muscle contraction

Front

Aerobic-with oxygen. Anaerobic glycolysis-without oxygen. Muscle fatigue- muscle is unable to contract. ADP- needs a phosphate to become ATP. ATP-molecule of energy

Back