HUMAN DISEASE: INTRODUCTION & TYPES

Chapter wise questions of zoology:class XII

 Chapter wise Questions of zoology_ XII

1. Animal tissue:

1. List the functions of epithelial tissue.

2. What are the types of simple epithelium? Give one example and function of each type.

3. write about pseudostratified epithelium.

Menstrual cycle

 Menstrual cycle: Also called as Female reproductive cycle. After puberty (10 - 12) yrs , the female reproductive system undergoes a repeated Cyclic process Called as menstrual Cycle. It lasts for 28 days (±7days) [ 21 days up to 35 days]. First menstrual Cycle is called menarch (10-12 yrs age)  while last menstrual cycle is Called menopause (45-50 Yrs age) .

Folliculogenesis:

The process of formation of graffian follicle from primordial follicles is called folliculargenesis. It takes place in ovary  every month after puberty under the regulation of hypothalamus and pituitary gland.

Female Reproductive organs: Human

Female reproductive organs are ovaries, oviducts, uterus vagina, External genitalia , mammary glands and accessory glands.

This system is Concerned with formation of ova, fertilization, foetal development and child birth.

ovaries: Are primary sex organs of female. A pair of ovaries are present in pelvic Cavity each on either side of uterus. Each ovary is Small sized (3 cm x 2 cm X 1 cm) & almond Shaped structure.

Male Reproductive System: Human

 Origin: Mesodermal.

The male reproductive system Consists of :

•primary sex organs (a pair of testes),

• secondary sex organs ( duct system and associated glands)

• External genitalia(penis and scrotum).

The duct system includes  Epididymis, vas deferens, ejaculatory ducts and urethra.

The associated glands are seminal vesicles, prostate gland and cowper's gland.

SCORE A+ IN ZOOLOGY - THE ULTIMATE 1 DAY CHALLENGE

HUMAN EAR: STRUCTURE & FUNCTION : INNER EAR