Which cranial nerve in the diagram causes heart rate to decrease?
a) H
b) I
c) J
d) K
e) L
d
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In cellular respiration,
A) cells breathe, or take in, O2 and give off CO2. B) energy is absorbed from glucose and is transferred to CO2. C) mitochondria release glucose molecules. D) energy is released from molecules and is transferred to other molecules.
__________ , which is secreted by the placenta, stimulates the synthesis and secretion of testosterone before birth.
A) estrogen B) GnRH C) HCG D) LH E) FSH
List and describe the factors involved in initiating labor contractions
A) Decreasing estrogen levels causes cervical dilation and endometrial contractions. B) Relaxin causes cervical dilation, fetal weight distorts the myometrium, and the distortion of the cervix and the myometrium triggers release of oxytocin. C) Inhibin causes cervical dilation, fetal weight distorts the myometrium, and the distortion of the cervix and myometrium triggers the release of prolactin. D) Relaxin causes cervical dilation, fetal weight distorts the myometrium, and the distortion of the cervix and myometrium triggers the release of inhibin. E) Falling levels of estrogen and prosterone cause cervical dilation and the shedding of the functional layer which causes myometrial contractions.
Chemoreceptor reflexes respond to
A) carbon dioxide. B) oxygen. C) pH. D) All of the answers are correct. E) None of the answers is correct.