Ductus Deferens Research Paper

Pink colored spermatozoa (sperm) were surrounded by spermatocytes (formed after meiosis of spermatogonia) and spermotigonia (precursor to sperm)

The gonads are the male and female reproductive organs, the testes (males) and ovaries (females). The testes and ovaries produce androgens (testosterone) and estrogens, these hormones affect aggressiveness, mood, and sexual interest and behavior. Higher levels of these hormones have been shown to promote aggressiveness in both sexes (Morris and Maisto, 2002).

Testes: The function of the testes (following puberty) is to produce spermatozoa and androgens, mainly testosterone. The testes produce sperm; about 300 million are released with each ejaculation.

dia in EUROPE show more nudity than in the united states Chapter 2 Clitoris- a small, elongated erectile structure in women that develops from the same embryonic tissue as the penis Cowper’s Gland- two pea-shaped structures located beneath the prostate gland in men that secrete a few drops of an alkaline fluid prior to orgasm Hymen- the thin membrane that partially covers the vaginal opening in many sexually inexperienced women G Spot- a small, sensitive area on the front wall of the vagina found in about 10% of women Penis- the male organ for sexual intercourse and the passageway for sperm and urine Scrotum- the pouch beneath the penis that contains testicles Vuvla- external female genitalia, including the mons veneris, labia majora, labia minora, clitoris, vaginal opening, urethral opening

This complex organ can be found in upper right side of the abdomen. It is unique because it is a dual functioning organ. The first function is to control the body’s blood sugar level. The second function is to secrete insulin and glucagon. Lastly, I studied the testes of the fetal pig, which I found at the end of the scrotum under the skin. The teste are a key part in the process of secreting testosterone. After completing this section I began to dissect the last system of the pig.

The testes are the gamete-producing organs of the male reproductive system. 3. Ejaculation is the forceful expulsion of semen from the penis. 4. Seminiferous tubules are the specialized compartments of the testes in which sperm are produced.

According to Patton and Thibodeau (2012), the kidneys are a pair of bean-shaped organs found along the posterior muscular wall of the abdominal cavity. The convex side of each kidney is located laterally and the concave side medial. The renal hilum on the concave side is the point where the renal artery enters, the vein and ureter leave the kidney. Deep to the perirenal fat, the kidney is surrounded by fibrous connective tissue called the renal capsule. Deep to the renal capsule is the renal cortex, which surrounds the renal medulla with their apexes facing inward toward the centre of the kidney. Nephrons, the basic structural and functional unit that filters blood to produce urine, are located within the cortex and medulla. The minor calyces that collects urine are connected to the papilla of each pyramid, and merge to form major calyces, which further merge into the renal pelvis. Urine drains into the ureter at the renal hilum where renal pelvis exits the kidney (Brenner, 2007).

The reproductive system is a system of sex organs within an organism which work together for sexual reproduction. The development of the reproductive system is controlled by the pituitary

Hello Heather, as you mentioned, a patent ductus arteriosus is normal at birth. A Patent Ductus Arteriosus (PDA) s a heart condition that is characterized by the persistence of a normal fetal connection between the aorta and the pulmonary artery which allows oxygen rich blood that should go to the body to recirculate through the lungs. All newborns are born with PDA because when a fetus is growing in the uterus, it is not necessary to circulate blood through the lungs as oxygen is provided by the placenta. A PDA allows the blood to bypass the lungs and proceed to the baby’s body. At birth placenta is removed and baby’s lungs must provide oxygen to his or her body. When the baby takes the first birth, the blood vessels in the lungs open up and

Semen is the male reproductive fluid, containing spermatozoa in suspension. Sperm is a male reproductive cell. Prostate is a gland surrounding the neck of the bladder in male mammals and releasing prostatic fluid. Urethra is a duct by which urine is convey out of the body from the bladder, and which in male vertebrates also conveys semen. Penis is the male genital organ of higher vertebrates, carrying the duct for the transfer of sperm during copulation. Glans is the head of a penis. A shaft is the cylindrical part of the penis between the scrotum and head. Seminiferous tubules is any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature. Seminal vesicles is each of a pair of glands that open into the vas deferens near its junction with the urethra and secrete many of the components of semen. Bladder is a membranous sac in human and other animals, which urine is collected for excretion.

• Testosterone - a male hormone produced mainly in the testes. Testosterone causes the development of male sex characteristics, such as a deep voice and a beard. It also strengthens muscles and bone mass.

The seminal vesicle is located posterior of the bladder, over the prostate gland, and anterior of the rectum. The main function of the seminal vesicle is that it carries a liquid that mixes with sperm in order to create semen (male reproductive fluid). The seminal vesicle has to do with the production of sperm because it lets out a fluid that is high in sugars (fructose is the most common), which is then given to the sperm. This fluid helps with the semen because makes the semen sticky. With the semen being sticky it will assure that the sperm will be able to attach to the vagina for a long enough time so that it can reach the egg.

Do you know how you were born? Do you know how you came to be? The reproductive system is the system that made that all possible. Without the reproductive system you wouldn’t have been born. In order to produce offspring, the male and female reproductive systems have to be different. Each system has different parts, problems and care. Each system have different purposes, the male reproductive system’s function is to produce sperm, while the female reproductive system’s function is to produce ova, store ova and house a fertilized egg.

sperm as a superior and the egg as an expelling organ part. Moreover, the features of the egg and

Testes are kept in the scrotum sac and are two oval shaped glands, about 8,5cm long and 2.5cm wide. A midline septum divides the scrotum into two halves and each testical is covered in two tunics; the Tunica vaginalis from the peritoneum and the Tunica albuginea which is a deeper tunic and a fibrous capsule. The septa from this layer then divides the testes into 250 – 300 wedge shaped compartments or lobules. It is in these lobules that seminiferous tubules are found, where sperm is made. Each lobule contains about 1 – 4 seminiferous tubules. The network into which seminiferous tubules empty is called the Rete testis. After which, the epididymis receives sperm from the rete testis network.