Platelets form from large cells called __________.
a) thrombocytes
b) lymphoblasts
c) macrophages
d) megakaryocytes
Answer: d) megakaryocytes
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Which of the following is incorrect pertaining to the sacrum?
A) It articulates with the L5 vertebra at the lumbosacral angle. B) It articulates with the coccyx at its apex. C) Its sacral hiatus leads to the sacral canal. D) Its cornua articulate with the inferior articular facets of the L5 vertebra. E) It articulates with the ilium at the auricular surface.
Which disease is caused by the absence of enteric neurons in the distal large intestine?
A. Multiple endocrine neoplasia type 2 B. Hirschsprung disease C. Gastroenteritis D. Spastic colon
Urine collects in the urinary bladder prior to entry into the urethra.
Answer the following statement true (T) or false (F)
The thermoneutral zone is defined as:
A. the region in the central core of the body where temperature never changes. B. the core body temperature at which no energy is expended to maintain homeostasis. C. the environmental temperature range over which the changes in skin blood flow alone can regulate body temperature. D. the region of the body halfway between the high-temperature core and the low-temperature skin. E. the environmental temperature range in which shivering, changes in blood flow, and changes in thyroid hormone concentrations can maintain homeostasis of the body's core temperature.