Polyspermy Study guides, Class notes & Summaries

Fertilization - joining of a sperm and an egg to form a diploid zygote Organisms that use external fertilization - most animals who participate in this live in aquatic environments like tadpoles -tend to produce large number of gametes How are gametes released for external fertilization - -gametogenesis occurs in response to environmental cues( lengthening days and warmer water temperatures) that indicate a favorable season for breeding -gametes are released in response to specific cues f...

CMMB 403 midterm 2Capacitation - correct answer changes to the sperm after it enters the female to be able to fertilize the egg. takes 6 hours to become competent. Sperm become hyperactivated to be able to penetrate the cumulus and the zona p. what is the acrosome - correct answer tip of sperm. releases enzymes to degrade the zona pellucida to allow the sperm DNA to enter. exocytosis of the enzymes to allow contact with the egg How does the sperm bind to the zona pellucida - correct ans...

Ampulla-Isthmus Junction (AIJ) - ANSWER-the site of fertilization in the female reproductive tract; in the mare it serves as a control point that allows only fertilized eggs to pass through to the isthmus Hormone - ANSWER-chemical messenger produced by a ductless gland or tissue and carried in the blood to a target organ where it effects a change in cellular activity Caruncle - ANSWER-a "button-like" structure on the uterine epithelium which forms the maternal side of the placentome in r...

Pheremone -ANSWER airborne chemical message (odor) which attracts male or female Corpus Hemorrhagicum -ANSWER collapsed follicle which contains blood, lymph, granulosa cells, and theca cells Uterotubal Junction (UTJ) -ANSWER Site where oviduct joins the uterine horn and functions to prevent polyspermy by restricting the number of spermatozoa entering the oviduct; in the cow it regulates the entrance of the embryo into the uterus depending on estradiol levels by forming a kink--if estrogen ...

What organ detoxifies harmful chemicals? - ANSWER Liver The end of a woman's reproductive life? - ANSWER Menopause Is genital herpes bacterial or viral? - ANSWER Viral What do mammary glands produce before lactation? - ANSWER Colustrum Female Gonads? - ANSWER Ovaries OverNutrition - ANSWER Gluttony Location of sperm cell production? - ANSWER Seminiferous tubules What do the prostate & Cowpers glands do? - ANSWER Add fluid to sperm The technical name for a fertilized egg?...

Ampulla-Isthmus Junction (AIJ) -ANSWER the site of fertilization in the female reproductive tract; in the mare it serves as a control point that allows only fertilized eggs to pass through to the isthmus Hormone -ANSWER chemical messenger produced by a ductless gland or tissue and carried in the blood to a target organ where it effects a change in cellular activity Caruncle -ANSWER a "button-like" structure on the uterine epithelium which forms the maternal side of the placentome in rumi...

Straighterline Anatomy and Physiology 2 BIO202 Topic 13: Human Development, Growth and Aging Quiz 2023 Hello We are a team of experts offering course attendance for all Straighterline, Portage Learning, Sophia etc courses. We also write essays, research papers and school assignments. Should you need any of these services, Contact us via email: or : +1 (908) 954-4829. Guaranteed Passing!  BIO202_MH_V3  Topic 13: Human Development, Growth and Aging Started on Saturday, June 10, 20...

Who gets harmed, who benefits in each type of interaction? - • Mutualism (prey and predatory benefit from interaction) • Consumption (one benefits and one is harmed by interaction. Includes: predation, parasitism, herbivory) • Competition (both are harmed by interaction - but one harmed more than the other) What is "facilitation" and how does it play out over time? - Facilitation: an interaction in which one species has a positive effect on the survival and reproduction of another ...

Embryology Test Questions| answers updated Sperm cannot fertilize an egg until they A) Lose their acrosome. B) Undergo capacitation. C) Are activated by nurse cells of the vagina. D) Are in the vagina for 3 days. - B All of the following are true during oocyte activation, except that A) Other sperm are prohibited from fertilizing the egg. B) The ovum completes meiosis II. C) The metabolic rate of the oocyte increases. D) The cortical reaction occurs. E) The ovum begins mitosis. - ...

1) Within a sperm cell, what is the function of an acrosome? - ANS Contains enzymes needed to penetrate egg cells 2) How do membrane proteins on both an egg and a sperm cell function to keep fertilization species-specific? - ANS A fragment from the egg-wall receptor binds to binding proteins on the sperm only if it is the same species 3) Explain the steps of the acrosomal reaction. - ANS i. Sperm Contacts jelly layer ii. Reaction begins: Release of digestive en...