The retina is incomplete at the place where the ____ ____ leaves the eye forming your "blind spot"
Fill in the blank(s) with the appropriate word(s).optic nerve
Ans: optic nerve
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A fetus is
(a) a newborn pig. (b) a newborn human. (c) an unborn mammal. (d) all of the above.
Which of the following is NOT a characteristic of a morphogen?
A. A morphogen will only elicit effects in areas where it is at a high enough concentration. B. Morphogens are distributed asymmetrically throughout the cell. C. Morphogens can be secreted to act on neighboring cells. D. Morphogens can cause cell death. E. None of these choices are incorrect, they are all characteristics of morphogens.
Which of the following hormone is transported from hypothalamus to pituitary gland through the hypophyseal portal vein?
a. Oxytocin b. Thyrotropin (TSH, thyroid stimulating hormone) c. Vasopressin d. Corticotrophin-releasing hormone (CRH) e. Follicle-stimulating hormone (FSH)
What are some of the reasons why placental mammals appear to have outcompeted monotremes and marsupials, the other two groups of mammals?
What will be an ideal response?