Which structure connects the yolk sac to the embryonic midgut?

A. Liver bud
B. Vitelline duct
C. Hepatopancreatic ampulla
D. Gastric duct
E. Foregut dilation


B. Vitelline duct

Anatomy & Physiology

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What is moving a limb away from the midline of the body along the frontal plane called?

A) flexion B) abduction C) extension D) adduction

Anatomy & Physiology

What component of blood is directly related to the immune system?

a. leukocytes b. erythrocytes c. platelets d. cell fragments e. thrombocytes

Anatomy & Physiology

Blood borne factors (e.g. ions, glucose, amino acids) cause the release of all of these hormones except ________

A) insulin B) epinephrine C) calcitonin D) parathyroid hormone (PTH)

Anatomy & Physiology

The ________ principle states that the size and speed of an action potential are independent of the stimulus strength

A) threshold B) all-or-none C) graded potential D) saltatory propagation E) summation

Anatomy & Physiology