Examlex
_______ is secreted by Leydig and thecal cells.
Joints
Structures that connect two or more bones in the body, allowing for mobility and flexibility.
Action Potential
A rapid, temporary change in the electrical potential across a cell membrane, leading to the transmission of an electrical impulse along the neuron or muscle cell.
T Tubule
Tubular extensions of the plasma membrane in muscle cells that penetrate into the cell's interior, crucial for transmitting the action potential to trigger muscle contraction.
Calcium Ions
Positively charged ions (Ca2+) essential for various cellular processes, including muscle contraction, nerve function, and blood clotting.
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