Which type of bone cell possesses extensive ER and ribosomes?
A. Osteoclast
B. Osteochondral progenitor cell
C. Osteoblast
D. Osteocyte
Answer: C
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Which of the following is a property of thermoreceptors?
A) involves specialized receptors B) monitor heat stimuli, not cold C) found in skin only D) project to reticular formation E) cold receptors are less numerous than warm receptors
The first sign of puberty in females is budding breasts
Indicate whether the statement is true or false
Which of the following describes the asynchronous mode of teleost oocyte development?
a. multiple spawners; prolonged season b. multiple spawners; short season c. single spawners; prolonged season d. single spawners, short season e. none of these
On a warm day, would the cremaster muscle be contracted or relaxed? Why?
A) The cremaster muscle would be contracted so the scrotum would be pulled close to the body. B) The cremaster muscle would be contracted so the scrotum could descend away from the body. C) The cremaster muscle would be relaxed so the scrotum would be pulled close to the body. D) The cremaster muscle would be relaxed so the scrotum could descend away from the body. E) The cremaster muscle would be contracted so the testes can descend into the scrotal cavities.