Ribs that join the sternum directly by costal cartilages are called
A. vertebrochondral ribs.
B. floating ribs.
C. false ribs.
D. true ribs.
Answer: D
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The concentration of a hormone in the blood can affect the number of receptors for that hormone on or in a target cell.
Answer the following statement true (T) or false (F)
The appearance of pubic and axillary hair is characteristic of which stage of puberty?
A. Menopause B. Climacteric C. Thelarche D. Pubarche E. Menarche
Pheromones differ from hormones in that
A) they are transmitted between members of different species. B) they are only found in plants and fungi. C) they are transmitted between members of the same species. D) they act only within an individual.
What is the only muscle in the quadriceps femoris muscle group that extends the knee and flexes the thigh?
A. Rectus femoris B. Vastus medialis C. Biceps femoris D. Vastus intermedius