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Transcript
Biology 12: Human Reproductive System Worksheet 45 points
Name______________________ Date______________ Class_________
Please answer the following questions:
1. Explain the function of the following structures of the male reproductive system: (5)
a. penis – organ of sexual intercourse
b. vas deferens – connects epididymis and urethra
c. testes – produces sperm and testosterone
d. seminal vesicle – provides fructose and prostaglandin in the semen for the sperm
e. epididymis – location of the maturation of sperm
2. Explain the function of the following structures of the female reproductive system. (5)
a. vagina – organ of sexual intercourse and birth canal
b. cervix – opening of the uterus, protects the uterus from bacterial infections
c. uterus – houses the developing fetus
d. ovaries – produces egg and estrogen and progesterone
e. oviduct – connects the ovaries and uterus, where fertilization takes place
3. What is the primary function(s) of the male reproductive system? (1)
To make the sperm
4. What is the primary function(s) of the female reproductive system? (1)
To make the egg
5. Two ___haploid______ gametes come together to form a diploid (3)_zygote_____ in a process
called ____fertilization___________.
6. Fertilization occurs in what structure of the female reproductive system? (1) oviduct
7. List and briefly describe the 3 phases of the menstrual cycle. (3)
Menses – breaking down of the uterine wall (endometrium) (low in estrogen and progesterone)
Proliferative – the endometrium begins to regrow in thickness
Secretory – when the endometrium is at it’s thickest (high in estrogen and progesterone)
8. What other system of the body has a large and important role in the human reproductive
system? (1)
Endocrine system
9. List 2 hormones and describe their importance in the human reproductive system. (2)
FSH/LH
10. What substances are involved in controlling the production of sperm and egg in humans? (1)
Negative feedback – inhibin
11. Why is it advantageous for testes to be kept outside of the male’s body? (1)
Lowers the temperature. Sperm are created in an environment lower than 36.5C.
12. Base you answers to the following questions on the diagram below and your knowledge of
biology.
A
B
E
C
D
a. Label each structure A – E. (5)
b. A placenta normally develops in this structure. _uterus_______ (1)
c. This is the structure that produces estrogen and progesterone._corpus luteum_______ (1)
d. This is the structure that produces eggs. _ovaries_______ (1)
e. This structure dilates before delivery allowing for the baby to emerge from the vagina.
__cervix______(1)
f. What is the corpus luteum? (1) yellow body or dead body – releases estrogen and progesterone
g. What triggers the menstruation? (1) – lowered levels of estrogen and progesterone
13. Base you answers to the following questions on the diagram below and your knowledge of
biology.
A
C
B
D
a. Label each structure A – D. (4) A – seminal vesicles, B – prostate glands, C – vas deferens, D
- urethra
b. List the male secondary sexual characters: (4)
-
Boarder shoulders, lower voices, enlarged larynx, grow taller, facial hair, etc…
c. Which hormones regulate a) testosterone secretion and b) sperm development? (2)
LH and FSH