Advertisements
Advertisements
प्रश्न
Write two major functions of testis.
Advertisements
उत्तर
- They produce male gametes called spermatozoa by the process of spermatogenesis.
- The leydig cells of the seminiferous tubules secrete the male sex hormone called testosterone. Testosterone aids in the development of secondary sex characteristics in males.
APPEARS IN
संबंधित प्रश्न
Identify True/False statement. Correct false statement to make it true.
Spermatozoa get nutrition from Sertoli cells.
Identify True/False statement. Correct false statement to make it true.
Leydig cells synthesise androgens.
Expand the following biological abbreviations: TSH
List the structures, in their correct sequence, through which the sperms must pass from the time they are produced in the testes to the time they leave the urethra.
State the function of Testes.
Name the following:
The tubular knot fitting like a cap on the upper side of the testis.
Differentiate between vas deferens and vasa efferentia.
Write the functional activity of the following structure:
Testis
In humans, sperm production occurs in the organ ______.
Which of the following correctly describes the gubemaculum?
In the given diagram represents the
How much semen is generally present in seminal fluid?
Identify the accessory sex gland consisting of 20-30 separate lobes and secreting about 30% of semen.
In the male reproductive system, the vasa deferens joins the ____________.
The enlarged end of penis is covered by a loose fold of skin is called ______.
Increased secretion of which hormone start the process of sperm formation at the time of puberty?
Which one of the following is not a male accessory gland?
During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys
______ is the smallest cell in males.
The path of sperm transport is given below. Provide the missing steps in blank boxes.
Give reason: Testes are located outside the body cavity in scrotal sacs.
Answer the following question based on the human male reproductive system:
What is the length of a sperm?
Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs:
| Column I | Column II | ||
| (a) | Leydig Cells | 1. | Lack of thyroxine in children |
| (b) | Stoma | 2. | 12 pairs |
| (c) | Ova | 3. | Testosterone |
| (d) | Cranial nerve | 4. | Diffusion of respiratory gases |
| (e) | Cretinism | 5. | Haploid cells |
| 6. | 31 Pairs | ||
| 7. | Diploid cells |
State very briefly the chief function of the following:
Prostate gland
Name these:
3 male accessory glands in humans.
The figure given ahead is an organ system of humans. Study the same and answer the following questions.
 |
- Identify the organ system.
- Label the guidelines 1 to 7.
- Write one important role of parts 3 and 6.
- Name the cells of part 1 that produce testosterone.
- What is the significance of the part 1 being located in a separate sac suspended outside the body?
