Which embryonic layer gives rise to the lamina propria and muscularis externa?
A. Ectoderm
B. Endoderm
C. Mesoderm
D. Neural crest
E. Gastric tube
C. Mesoderm
Anatomy & Physiology
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Pain is a vital sign
Indicate whether the statement is true or false.
Anatomy & Physiology
Which of the following is an organ?
A) blood B) heart C) peritoneum D) connective tissue E) mitochondrion
Anatomy & Physiology
The ______ cells are responsible for HCl production.
A. goblet B. mucous C. parietal D. chief
Anatomy & Physiology
When aldosterone is absent, sodium reabsorption in the nephron is
A. greatly increased. B. greatly decreased. C. unchanged.
Anatomy & Physiology