This primary germ layer is the middle layer, called ______, and gives rise to a gelatinous material called ________________, which gives rise to different types of connective tissue such as bone, muscle, and blood.

A) Ectoderm; stem cells.
B) Mesoderm; mesenchyme.
C) Endoderm; mesenchyme.
D) Mesoderm; fibroblasts.
E) Ectoderm; mesenchyme.


Answer: B) Mesoderm; mesenchyme.

Anatomy & Physiology

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The ____________________ is the time when the patient is being placed under anesthesia

Fill in the blank(s) with correct word

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Which organ removes most of the worn-out red blood cells from the circulation?

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