Which type of cartilage covers and protects the ends of bones at freely moveable joints? elastic cartilage
hyaline cartilage
fibrocartilage
both hyaline and elastic cartilage
hyaline cartilage
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Which of the following correctly lists the sequence of structures that a cardiac action potential follows in order to excite normal contraction of the heart?
a) Bundle of His, Purkinje fibers, Atrioventricular (AV) node b) Sinoatrial (SA) node, Purkinje fibers, AV node, Bundle of His c) Purkinje fibers, AV node, SA node, Bundle of His d) SA node, AV node, Bundle of His, Purkinje fibers e) Bundle of His, SA node, AV node, Purkinje fibers
A hormone that has as its primary function the regulation of hormone secretion by another endocrine gland is classified functionally as a(n):
a. primary hormone b. adrenal hormone c. tropic hormone d. helper hormone e. secondary hormone
Sarah is a type 1 diabetic who forgot to bring insulin with her today. Due to high circulating ketone levels, it is likely that Sarah's blood pH may decrease.
Answer the following statement true (T) or false (F)
Humans have ________ pairs of ribs.
A) 2 B) 6 C) 10 D) 12 E) 24