Human Reproduction Created by Educational Technology Network. www.edtechnetwork.com 2009

Human Repro1 Human Repro2 Human Repro3 Human Repro4 Human Repro5 10 20 30 40 50

Human Repro 1 - 10 The diagram below represents the human male reproductive system. Which activity would be prevented by blockages of X and Y? Transport of urine out of the body Passage of testosterone to the female to stimulate egg production Movement of sperm out of the body Movement of testosterone to the testes to stimulate sperm production X Y

Human Repro Answer 1 – 10 Movement of sperm out of the body

Human Repro 1 - 20 The diagram below represents a system in the human body The primary function of structure A is to Produce energy needed for sperm to move Provide food for the sperm to carry to the egg Produce and store urine Form gametes that may be involved in fertilization

Human Repro Answer 1 – 20 Form gametes that may be involved in fertilization

Human Repro 1 - 30 Which structure has both reproductive and excretory functions? A 3. C B 4. D

Human Repro Answer 1 – 30 D. - urethra

Human Repro Question 1 - 40 Which statement describes the reproductive system of a human male? It releases sperm that an be used only in external fertilization It synthesizes progesterone that regulates sperm formation It produces gametes that transport food for embryo formation It shares some structures with the excretory system

Human Repro Answer 1 – 40 It shares some structures with the excretory system

Human Repro 1 - 50 Which reproductive structure is correctly paired with its function? Uterus – usual site of fertilization Testis – usual location for egg development Ovary – delivers nutrients for the embryo It shares some structures with the excretory system

Human Repro Answer 1 – 50 It shares some structures with the excretory system

Human Repro Question 2 - 10 Testes are adapted to produce Body cells involved in embryo formation Immature gametes that undergo mitosis Sperm cells that may be involved in fertilization Gametes with large food supplies that nourish a developing embryo

Human Repro Answer 2 – 10 Sperm cells that may be involved in fertilization

Human Repro 2 - 20 Regulation of sexual reproductive cycles of human males is related most directly to the presence of the hormone Estrogen Progesterone Testosterone Insulin

Human Repro Answer 2 – 20 Testosterone

Human Repro 2 - 30 The diagram below represents part of a human reproductive system One of the functions of this part of the system is to Supply essential nutrients to the offspring in the form of milk Provide nutritional support for the embryo Provide a structure that allows the mixing of maternal and fetal blood Produce specialized proteins used in the production and release of sperm

Human Repro Answer 2 – 30 Provide nutritional support for the embryo

Human Repro 2 - 40 In most mammals, the placenta is essential to the embryo for the processes of Meiosis and excretion Nutrition and excretion Milk production and digestion Blood exchange and digestion

Human Repro Answer 2 – 40 Nutrition and excretion

Human Repro Question 2 - 50 The human female reproductive system is represented in the diagram below Production of gametes and support of the fetus normally occur in structures 1. 1 and 2 3. 3 and 5 2. 2 and 4 4. 4 and 5 4 3 5 2 1

Human Repro Answer 2 – 50 3. 3 and 5 3 5

Human Repro Question 3 - 10 The human female reproductive system is adapted for Production of zygotes in ovaries External fertilization of gametes Production of milk for a developing embryo Transport of oxygen through a placenta to a fetus

Human Repro Answer 3 – 10 Transport of oxygen through a placenta to a fetus

Question 3 - 20 The human reproductive system is regulated by Restriction enzymes Antigens Complex carbohydrates Hormones

Human Repro Answer 3 – 20 Hormones

Question 3 - 30 In which part of this system does a fetus usually develop? 1. A 3. C 2. B 4. D A D B C

Answer 3 – 30 4. D D

Question 3 - 40 One function of the placenta in a human is to Surround the embryo and protect it from shock Allow for mixing of maternal blood with fetal blood Act as the heart of the fetus, pumping blood until the fetus is born Permit passage of nutrients and oxygen from the mother to the fetus

Human Repro Answer 3 – 40 Permit passage of nutrients and oxygen from the mother to the fetus

Human Repro Question 3 - 50 Which structure is correctly paired with its function? Testis – produces nutrients for the offspring Placenta – allows nutrients to diffuse from the mother to the embryo Uterus – produces testosterone used in egg production Ovary – provides a place for the internal development of the embryo

Human Repro 3 – 50 Placenta – allows nutrients to diffuse from the mother to the embryo

Human Repro Question 4 - 10 As women age, their reproductive cycles stop due to decreased Digestive enzyme production Production of ATP Levels of specific hormones Heart rate

Human Repro Answer 4 – 10 Levels of specific hormones

Human Repro 4 - 20 Some chemical interactions in a human are show in the graph below This graph represents hormones and events in the Process of fetal growth and development Process of meiotic cell division during sperm development Reproductive cycle of males Reproductive cycle of females

Answer 4 – 20 Reproductive cycle of females

Human Repro Question 4 - 30 A large number of sperm cells are produced by males every day. This large number of sperm cells increases the chance that At least 1 sperm cell will be reached when the eggs swim toward the sperm cells in the ovary Several sperm cells will unit with an egg so the fertilized egg will develop properly Some of the sperm cells will survive to reach the egg Enough sperm cells will be present to transport the egg from where it is produced to where it develops into a fetus

Human Repro Answer 4 – 30 Some of the sperm cells will survive to reach the egg

Human Repro Question 4 - 40 Which diagram best illustrates an event in sexual reproduction that would most directly lead to the formation of a human embryo? ...

Human Repro Answer 4 – 40 4.

Human Repro 4 - 50 Which statement about the gametes represented in the diagram below is correct? They are produced by females They are fertilized in an ovary They transport genetic material They are produced by mitosis

Human Repro Answer 4 – 50 They transport genetic material

Human Repro Question 5 - 10 Identify one activity of a mother that can disrupt fetal development and explain how this activity might affect the development of the fetus.

Answer 5 – 10 Having x rays can result in defects in the genes of the fetus Smoking may cause low birth rate

Human Repro 5 - 20 In humans, a sperm cell and an egg cell normally fuse in the upper portion of the Cervix Vagina Oviduct

Human Repro Answer 5 – 20 Oviduct

Human Repro Question 5 - 30 Which statement about the gametes represented in the diagram below is correct? They are produced by females They are fertilized in an ovary They transport genetic information They are produced by mitosis

Human Repro Answer 5 – 30 They transport genetic information

Human Repro Question 5 - 40 In humans, a sperm cell and an egg cell normally fuse in the upper portion of the Cervix Vagina Oviduct Ovary

Human Repro Answer 5 – 40 Oviduct

Human Repro Question 5 - 50 Identify one activity of a mother that can disrupt fetal development and explain how this activity might affect the development of the fetus.

Human Repro Answer 5 – 50 Having x rays can result in defects in the genes of the fetus Smoking may cause low birth rate