हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

With a suitable diagram, describe the organisation of mammary gland. - Biology

Advertisements
Advertisements

प्रश्न

With a suitable diagram, describe the organisation of mammary gland.

आकृति
Advertisements

उत्तर

A functional mammary gland is characteristic of all female mammals. The mammary glands are paired structures (breasts) that contain glandular tissue and variable amount of fat. The glandular tissue of each breast is divided into 15 – 20 mammary lobes containing clusters of cells called alveoli. The cells of alveoli secrete milk, which is stored in the cavities (lumens) of alveoli.

The alveoli open into mammary tubules. The tubules of each lobe join to form a mammary duct. Several mammary ducts join to form a wider mammary ampulla which is connected to lactiferous ducts through which milk is sucked out.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Human Reproduction - LONG ANSWER [पृष्ठ २३]

APPEARS IN

एनसीईआरटी एक्झांप्लर Biology [English] Class 12
अध्याय 3 Human Reproduction
LONG ANSWER | Q 5. | पृष्ठ २३

संबंधित प्रश्न

Fill in the blank:

The time between fertilisation and birth is called _________.


Mention the functions of Ovary.


Differentiate between: 

Prostate gland and cowper’s gland (the nature of secretion) 


Complete the paragraph with the help of words given in the bracket.
(Luteinizing hormone, endometrium of uterus, follicle stimulating hormone, estrogen, progesterone, corpus luteum) 

Growth of follicles present in the ovary occurs under the effect of ____________. This follicle secretes estrogen. _____________ grows/regenerates under the effect of estrogen. Under the effect of ___________, fully grown up follicle bursts, ovulation occurs and _______________ is formed from remaining part of follicle. It secrets ____________ and __________. Under the effect of these hormones, glands of ____________ are activated and it becomes ready for implantation.


The below diagram represents the vertical view of the human female reproductive system.

(i) Label the parts indicated by the guidelines 1 to 8.
(ii) How does the uterus prepare for the reception of a zygote?
(iii) What happens to the uterus if fertilization takes place?
(iv) What happens to the uterus if fertilization has failed to take place?


Name the Following

The structure formed after the release of ovum from the Graffian follicle.


Hormones secreted by the ovary of the female reproductive system.


What is the other term used for fallopian tube?


______ is homologous to Bartholin's glands.


All are internal genitalia in females. EXCEPT ______.


Identify the labels (i, ii and iii) in the given diagram of the female reproductive system.


Stratum germinativum is an example of which kind of epithelium?


In oocyte secondary maturation occurs in ______.


Anterior lobe of pituitary secretes:


In which part of the human female reproductive system do the following events take place?

Release of second polar body


Given below is a certain situation. Analyze and describe its possible impact on a person:

Egg is not fertilised in a human female.


The______ is also called the womb.


The ______ is also called the womb.


Choose the odd one out from the group of terms given below and write the category for the remaining terms:


Define the following term:

Hymen


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×