Identify the layer of the heart”D”

Progesterone is produced by what type of cell?

Identify the layer “C”

Identify the part of the conduction system “B”

Name a function of oxytocin

Identify the gland (blue star).

Melatonin is produced by what type of cell?

Name a function of thyroid stimulating hormone

Name a function of parathyroid hormone.

Identify the part of the conduction system “A”