Which lymphatic organs are smaller in an adult compared to a child?
A. Spleen and red bone marrow
B. Thymus and spleen
C. Peyer patches and spleen
D. Red bone marrow and thymus
E. Tonsils and spleen
D. Red bone marrow and thymus
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Eicosanoids are derived from steroids
Indicate whether the statement is true or false
Descending instructions along the ________ of the spinal cord adjust peripheral muscle tone to complement the reflexive movements of the head or neck.
Fill in the blank(s) with the appropriate word(s).
Calcium that enters the cell during smooth muscle excitation binds with
a. calmodulin. b. inactive myosin kinase. c. troponin. d. myosin. e. actin.
Seasonal affective disorder (SAD) has been linked to increased production and secretion of a specific hormone. Where is this hormone produced and secreted?
A) anterior pituitary B) thyroid C) pineal gland D) posterior pituitary