MONETREMES MARSUPIALS PLACENTAL MAMMALS REPRODUCTIVE SYSTEM OF MAMMALS MONETREMES MARSUPIALS PLACENTAL MAMMALS by MRS OZEMOKA HJ is licensed under a Creative Commons Attribution NonCommercial ID: 933639
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REPRODUCTIVE SYSTEM OF MAMMALS
MONETREMESMARSUPIALSPLACENTAL MAMMALS.
REPRODUCTIVE SYSTEM OF MAMMALS. MONETREMES MARSUPIALS PLACENTAL MAMMALS by MRS OZEMOKA H.J. is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Slide2MONOTREMES
Slide3MARSUPIAL MAMMAL
Slide4HUMAN MALE REPRODUCTIVE SYSTEM
The male reproductive system comprises: a pair of testes, paired accessory sex glands and( seminal vesicles,cowper’s
gland and prostate gland). a duct system for transporting spermatozoa from the testis to the penis.
Slide5THE MALE REPRODUCTIVE SYSTEM
Slide6Slide7THE SPERM
Slide8Slide9FRONT VIEW OF FEMALE REPRODUCTIVE SYSTEM.
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Slide10Female Reproductive System
Female reproductive organs are for intercourse, reproduction, urination
pregnancy and childbirth.
Slide11OVARIES
Ovaries are small oval organs situated in the abdominal cavity just ventral to the kidneysThe ovary consists of an inner region (medulla) and an outer region (
cortex) containing egg cells or ova. These are formed in large numbers around the time of birth and start to develop after the animal becomes sexually mature. A cluster of cells called the follicle surrounds and nourishes each ovum.
Slide12UTERINE TUBES OR FALLOPIAN TUBE
A Paired tubes which receives matured ovumFertilization occurs in the uppermost third of the tube.
Slide13UTERUS
A Hollow muscular organ infront of the rectum and behind the urinary bladder.Consist of three layers: outer perimetrim, middle
myometrium and inner endometrium.
Slide14FUNCTIONS OF WOMB
1. Sperm capacitation 2. Nutrition of the zygote by the uterine fluid before implantation 3. Sperm transport (contractions of the
myometrium) 4. Gestation 5. Parturition (foetal expulsion) .The uterus undergoes tremendous changes in size, structure and position during pregnancy. After parturition, uterine involution occurs and the uterus returns to its normal size.
Slide15CERVIX
It is a sphincter-like structure lying between the uterus and the vagina. It is characterized by a thick wall and constricted lumen. It closes the uterus to intruders thereby preventing infection. It however relaxes during birth and sexual activites.
Slide16VAGINA
The vagina is the female copulatory organ passageway for foetal
and placental delivery. It extends from the urethral opening to the cervix.
Slide17EXTERNAL GENITALIA
External genitalia: The external genitalia comprise of the vestibule, labia majora, labia minora
, clitoris and vestibular glands. They are all referred to as vula.
Slide18ASSIGNMENT
Write on the role of hormone in pregnancyWrite on the pregnancy process in humans. Explain what happens at each trimester.