Examlex
Which of the following is not a member of the phylum Platyhelminthes?
Action Potential
A rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane.
Sarcoplasmic Reticulum
A specialized type of smooth endoplasmic reticulum found in muscle cells, responsible for storing and releasing calcium ions during muscle contraction and relaxation.
Smooth Muscle
A type of muscle tissue which is not under conscious control, found in the walls of internal organs such as the stomach, intestines, and blood vessels.
Goose Bumps
The phenomenon where the skin appears to have goosebumps due to the erection of hairs, typically caused by cold or emotional factors.
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