3 Biology -- Human Biology: Reproductive System

Describe male reproductive system in human with labeled diagram.

1 Answers

The male reproductive system is responsible for the production and delivery of sperm. It consists of several organs, including the testes, epididymis, vas deferens, seminal vesicles, prostate gland, and penis.

1. Testes: The testes are two oval-shaped glands located in the scrotum (a sac-like structure outside the body). They are the primary male reproductive organs and produce sperm cells through a process called spermatogenesis. Testes also produce testosterone, the primary male sex hormone.

2. Epididymis: The epididymis is a coiled tube located on the backside of each testis. It serves as a storage and maturation site for sperm. Sperm produced in the testes enter the epididymis to mature and gain motility.

3. Vas Deferens: The vas deferens, also known as the ductus deferens, is a muscular tube that connects the epididymis to the urethra. It carries mature sperm from the epididymis to the ejaculatory duct.

4. Seminal Vesicles: The seminal vesicles are paired glands located behind the bladder. They produce a significant portion of the seminal fluid, which nourishes and provides energy to the sperm. The fluid contains fructose, proteins, and other substances.

5. Prostate Gland: The prostate gland is a walnut-sized gland situated just below the bladder, surrounding the urethra. It produces a milky, alkaline fluid that helps to neutralize the acidity of the female reproductive tract, enhancing sperm motility and survival.

6. Bulbourethral Glands: These small glands, also known as Cowper's glands, are located near the base of the penis. They secrete a clear, slippery fluid that lubricates the urethra and helps neutralize any residual acidity in the urethra caused by urine.

7. Penis: The penis is the external organ of the male reproductive system. It consists of three parts: the root, the shaft, and the glans. The urethra, a tube that carries both urine and semen, runs through the penis. During sexual arousal, the penis becomes erect, allowing for sexual intercourse and the delivery of semen into the female reproductive system.

Explain the process of follicular growth and development inside ovary of human female by diagram?

Follicular growth and development inside the ovary of a human female is a complex process that involves the maturation of ovarian follicles, which contain the eggs (oocytes). Here's a step-by-step explanation of the process:

1. Primordial Follicles: A female is born with millions of primordial follicles in her ovaries. Each primordial follicle consists of an immature egg surrounded by a single layer of follicular cells.

2. Follicular Activation: Throughout a woman's life, a small number of...

What is menstruation? Describe menstrual cycle in human female in detail.

Describe male reproductive system in human with labelled diagrams.

Describe the female reproductive system in human with labelled diagrams.

Give the process of oogenesis in brief.

Describe ovarian cycle in brief.

What is a spermatozoon ? Describe it's structure.

Describe the process of spermatogenesis in brief.

Describe the structure of ovary with a diagram.

Describe female reproductive system in human with labeled diagram.

1. Ovaries: These are two small, oval-shaped organs located on either side of the uterus in the lower abdomen. They are responsible for producing and releasing eggs (ova) through a process called ovulation. The ovaries also produce the female sex hormones estrogen and progesterone.

2. Fallopian Tubes: Also known as uterine tubes, these are two slender tubes that extend from the ovaries to the uterus. They serve as a pathway for the eggs to travel from the ovaries to the uterus. Fertilization...

1. List hormones required for proper functioning of male and female reproductive system.

The hormones required for proper functioning of male and female reproductive system are:

1. FSH ( Follicle Stimulating Hormone )

Male - Stimulates Sertoli cells that helps in spermatogenesis.

Female - Stimulates primordial follicle into Graafian follicle.

2. LH ( Luteinizing Hormone)

Male - Stimulates Leydig cells to produce testosterone.

Female- Helps in ovulation.

2. Draw a well labelled diagram of seminiferous tubules.

Seminiferous tubules are coiled structures where spermatogenesis occurs. These tubules house Sertoli cells supporting germ cell development and Leydig cells producing testosterone. Sperm cells mature within the seminiferous epithelium and move toward the central lumen. Hormones like FSH and testosterone regulate spermatogenesis. Fully matured sperm are released into the rete testis and progress through the male reproductive system for eventual ejaculation. These tubules generate sperm and...

3. Difference between corpus luteum and graffian follicle.

Corpus Luteum	Graffian Follicle
1. Produced when graffian follicle undergoes ovulation.	1. Produced when primordial follicle gets fully matured.
2. Doesn't contain ovum inside it.	2. Contains ovum inside it.
3. Secretes progesterone.	3. Secretes oestrogen.

4. Describe accessory reproductive organs of female.

The accessory reproductive organs of female are :

1. Bartholin's gland

- They are also called great vestibular glands. If these glands become blocked or infected, they can cause pain and swelling. Treatment includes warm compresses, antibiotics, or drainage if necessary.

2. Breasts

- The breasts are the largest accessory reproductive organs in female. Each breast contains of 15-20 lobes of lactiferous tubules which are embedded into fatty tissues. The first milk after parturition is colostrum.

5. Describe accessory reproductive organs of male.

The accessory reproductive organs of male are:

1. Seminal Vesicles

- These are 2 lobulated sacs. It is located between bladder and the rectum. They secrete thick alkaline fluid that mixes with sperm as they pass into ejaculatory ducts.

2. Prostate gland

- It is the largest accessory gland of male reproductive organ. It lies below the neck of urinary bladder. Its secretion mixes with secretion of seminal vesicles and bulbourethral gland to form seminal fluid.

3. Bulbourethral gland

- They are also...

6. Describe about fertilization and implantation.

Fertilization happens when a sperm cell combines with an egg cell, resulting in a zygote containing a full set of genetic material. This typically occurs in the fallopian tube post-ovulation. The zygote then goes through rapid cell divisions to become a blastocyst. Implantation, occurring roughly 6-10 days after fertilization, involves the blastocyst adhering to the uterine lining. This process allows for nutrient exchange between the mother and the growing embryo. Hormonal shifts support the...

7. Explain safe period .

The term "safe period" pertains to a particular stage within a woman's menstrual cycle, during which the chances of becoming pregnant are considered to be reduced. Generally, it entails refraining from sexual intercourse around the period of ovulation, which is when the egg is released from the ovary and can potentially be fertilized by sperm. This phase usually occurs around the middle of the menstrual cycle. Nevertheless, the effectiveness of the safe period technique is not guaranteed due...

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