How are skeletal muscle cells are electrically insulated from each other?

T-Tubule -Invaginations of the sarcolemma penetrating deep into the interior of the muscle cell.

Synaptic Cleft -the space between the axon terminal and the motor end plate.

Axon Terminal -the swollen distal end of the motor neuron axon.

Sarcolemma -the muscle cell membrane.

Synaptic Vesicles -structures within the axon terminal that contain the neurotransmitter acetylcholine (ACh).

Terminal Cisternae & Sarcoplasmic Reticulum (SR) -structures within skeletal muscle cells that serve as reservoirs of calcium ions.

Motor End Plate -a folded region of the sarcolemma at the neuromuscular junction.

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answer: b. nucleolus

explanation: nucleolus is a structure in the nucleus are ribosomes are made.

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sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.