The sarcoplasmic reticulum is an elaborate network of membranes in skeletal muscle cells that functions in calcium storage. This structure is essentially a modified:

Which is the trapezius muscle?

Saltatory conduction is made possible by:

Graded potentials travel down the membrane via ___________ propagation.

With myasthenia gravis:

Identify the hair matrix.

Identify the papillary layer.

Which hormone reduces the amount of calcium ions in the bloodstream?

Only dermal portion of the hair.

Articulations permitting only slight degrees of movement are: