Describe the male reproductive system, Biology

Assignment Help:

Describe the Male Reproductive System?

In addition to the primary sex organs, the testes, there are accessory structures that store, nourish, and activate the sperm, and conduct them to the egg in the female reproductive tract. The seminiferous tubules merge to form a coiled duct known as the epididymis. The epididymis is where sperm are stored, and it is where they undergo the final maturation process. The epididymis extends into the body cavity and becomes the vas deferens. The vas deferens eventually leads into the urethra, the tube that carries the sperm and other fluids to the outside of the body through the penis. The urethra also serves as a passageway for urine, but a membrane prevents either from passing at the same time.

There are three glands whose secretions empty into the vas deferens or urethra: the seminal vesicles, the prostate gland, and the bulbourethral or Cowper's glands. The secretions of these glands provide nutrients to nourish the sperm, substances to activate swimming by the sperm, and fluids that are designed to neutralize acid in the urethra and in the female reproductive tract. The sperm and these secretions together form the fluid known as semen.

The penis is the exterior male organ that is used to carry out internal fertilization of the egg within the female's reproductive tract. The penis' structure is well-suited to its function, which is to deliver the semen and sperm as close to the awaiting egg as possible. Structurally, it is an organ that is composed of sheaths of spongy tissue that can be extended and inserted into the female's body. During sexual stimulation, hollow spaces in these sheaths become filled with blood. This blood presses against the walls of the veins, so that the flow of blood from the penis is restricted. This blood under pressure causes the penis to enlarge and become erect. When the penis is inserted into the vagina during sexual intercourse, stimulation of the sensitive glans penis may result in an orgasm, which in males is usually accompanied by waves of strong muscular contractions in the sperm ducts and the forceful release of semen called ejaculation.

 


Related Discussions:- Describe the male reproductive system

How b and t cells recognize antigen are true explain, Which of the followin...

Which of the following statements about how B and T cells recognize antigen are true? a. B cells only recognize antigen presented by class I or class II MHC molecules. b. Both cell

Major classes into which the phylum is divided, Q What are the major classe...

Q What are the major classes into which the phylum is divided? What are the few examples of each and in which form (polyp or medusae) are they found? Coelenterates are divided

Define phase of the cell cycle, Q. Generally which phase of the cell cycle ...

Q. Generally which phase of the cell cycle has longer duration? The mitotic phase has quite a shorter length and the interphase comprises approximately 4/5 of the cell cycle.

Define prognosis of eating disorders, Define Prognosis of Eating Disorders?...

Define Prognosis of Eating Disorders? About 50% of the patients recover fully from anorexia nervosa and achieve normal weight, 30% improve but have a partial recovery and 20% w

What is ammensalim, What is ammensalim? Ammensalism is the ecological i...

What is ammensalim? Ammensalism is the ecological interaction in which an individual harms another without obtaining advanatage. Ammensalism is an inharmonious (negative) ecolo

Amoeba, figure of contractile vacuole of amoeba

figure of contractile vacuole of amoeba

FISHERIES, describe the endoskeleton of fish?

describe the endoskeleton of fish?

What is growth monitoring of an infant, What is Growth Monitoring? In t...

What is Growth Monitoring? In third world countries, about half the children are short and underweight for their age. Inadequate nutrient intake is the main reason. Inadequate

What are sensory receptors, What are sensory receptors? Sensory recepto...

What are sensory receptors? Sensory receptors are structures specialized in the acquiring of information, such as temperature, mechanical pressure, pH, chemical environment and

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd