Histology Threwee

Question 1

Name each of the following regions on the image of the ovary below:

Answer 1

1. cortex
2. medulla

Question 2

What hormone stimualtes ovary developement and maturation?

Answer 2

follicle-stimulating hormone

Question 3

Name the stage of the follicle below:

Answer 3

1. primordial follicle

Question 4

Name the stage of developement of the follicle below:

Answer 4

1. primary follicles

Question 5

Name the stage of follicular development below and state what hormones would be released during this stage of developement:

Answer 5

tertiary follicle. The hormones that are being released are inhibin and oestrogen

Question 6

Name the types of cells in the diagram below:

Answer 6

1. Interstitual endocrine cells of cats

Question 7

Name the structure below:

Answer 7

Corpus albicans

Question 8

What is the name of this strucuture and what characteristics allowed for this dermination?

Answer 8

Oviduct (fallopian tube)- vairably folded mucosa with a thin muscularis

Question 9

Fill in the blanks in the statement:

Progesterone produced by the corpora lutea __(1)____ smooth muscle contraction. Progesterone also promote ___(2)___ gland developement

Answer 9

(1) inhibits
(2) uterine and mammary

Question 10

Name the following features of the gland:

Answer 10

1. Muscularis
2. Mucosa
3. Tubular glands

Question 11

Name the following feautures on the slide below:

Answer 11

1. penis
2. testis
3. ductus deferens
4. epididymus
5. prostate

Question 12

What is the function of the sertoli cells?

Answer 12

line the basement memebrane of the seminiferous tubules forming the basic of the blood testis barrier. Sertoli cells restrict the transport between blood and the developing spermatogonia and hence nutrient availability

Question 13

What are the two main susbtances that are produced by the sertoli cells?

Answer 13

androgen-binding protein (ABP) and inhibin

Question 14

Describe the cascade of hormonal events that brings about spermatogenesis:

Answer 14

1. Releasing hormones such as LH from the hypothalmus are influenced by external factors such as temperature and light
2. LH stimulates interstitual cells in testis to produce testosterone
3. Testosterone stimulates spermatogenesis, increases prostate and vesicular gland secretions and secondary sexual characterisitics
4. Absence of mature sperms in testis signify an immature animal or off breeding season

Question 15

For the following image below:

1. Name cell and hormone secreted by it
2. Name the structure

Answer 15

1. institual cells (release testosterone)
2. seminiferous tubule

Question 16

Name the following cell in the digram below:

Answer 16

1. spermatogonia
2. spermatocyte
3. spermatids
4. spermatozoa

Question 17

Name the cell in the picture below:

Answer 17

sertoli cells

Question 18

Nam the following features in the image below:

Answer 18

1. Urethra
2. Corpus cavernosum
3. Corpus spongiosum
4. Os penis

Question 19

Name the structure in the diagram below:

Answer 19

Preputial glands

Question 20

How does the epithelium change between active an inactive mammary glands?

Answer 20

columnar when active to cuboidal when inactive

Question 21

Describe the composition of an inactive mammary gland:

Answer 21

mainly just ductular elements

Question 22

Describe the pathway from where milk is produced to where it leaves the body

Answer 22

1. intralobular duct
2. non-secrretory lobular duct
3. lobar duct
4. lactiferous sinus- a common chamber at the . base of each udder
5. Papillary duct- lined by keratinising, straifying squamous epithelium

Question 23

Name the following on the image below:

Answer 23

1. Lactiferous sinus
2. Secretory lobule