Reproduction and Development
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The location of the testes outside the body within the scrotum allows? | show 🗑
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| What is the role of homeotic genes during development? | show 🗑
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| ______ are organs that contain germ cells, which give rise to gametes. | show 🗑
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| In egg formation, meiosis is not completed until ______ occurs. | show 🗑
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| Select all the types of signals that can stimulate cell development and differentiation during animal development. | show 🗑
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| show | -sustain the libido
-stimulate sperm production
-control activity of the prostate gland
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| In males, testosterone causes the secretion of ______ during puberty. | show 🗑
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| During ovulation, a ______ is released from its follicle and is swept into the ______. | show 🗑
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| show | ovaries; anterior pituitary
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| How do birth control pills and injections act to prevent contraception? | show 🗑
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| After ovulation in animals, the ruptured follicle differentiates into a gland called the | show 🗑
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| show | Negative Feedback
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| show | Follicle
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| On average out of 100 sexually active, fertile women, how many will become pregnant each year if no birth control is used? | show 🗑
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| What is the gastrula stage | show 🗑
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| What is the morula? | show 🗑
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| What is a blastocyst? | show 🗑
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| show | fertilized egg cell
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| What is the Fetal stage? | show 🗑
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| What is the Embryonic stage? | show 🗑
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| About 7 days after fertilization, the ______ has formed and consists of an inner cell mass and fluid surrounded by a layer called the trophoblast. | show 🗑
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| show | Implantation
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| The embryonic stage of human development occurs from? | show 🗑
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| The ___ ___ manufactures blood cells until week 6 | show 🗑
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| show | Endoderm
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| show | Pressure
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| show | -chorion
-yolk sac
-amnion
-allantois
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| The extraembryonic membrane called the ______ contains fluid that cushions the embryo and maintains a constant temperature. | show 🗑
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| show | Allantois
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| At about 3 weeks, the ______ forms along the back of the embryonic disc and becomes a longitudinal axis around which structures organize as they develop. | show 🗑
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| The ______ is a structure that forms from a combination of embryonic tissues and endometrial tissues and that nourishes the embryo. | show 🗑
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| show | Chorion
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| show | 1. embryonic disk
2. Primitive streak
3. neural groove
4. neural tube
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| elect all of the following that are true about the human embryo around 4 weeks. | show 🗑
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| The organ systems have formed, are functioning, and begin coordinating during the ______ stage. | show 🗑
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| Select all of the following that are exchanged between the fetal blood vessels and the mother's blood at the placenta. | show 🗑
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| By the end of the __ th week (2nd month), all organ systems are in place | show 🗑
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| show | Positive
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| By the 3rd month, what is noticed? | show 🗑
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| show | True
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| show | Oxytocin
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| When the hypothalamus secretes ______, the anterior pituitary gland secretes ______ that stimulate the ovaries in females. | show 🗑
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| show | Secondary Spermatocyte
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| What are the products of meiosis I in oogenesis? | show 🗑
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