Sperm Lab

1. These enzymes are used by the sperm to create an opening in the corona radiata, zona pellucida, and plasma membrane of the oocyte for the sperm to pass through

21) As sperm are produced, they go through several stages. Which stage develops directly into mature motile sperm?

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

Fertilization in animals is similar to that in plants because its first cellcell change occurs after gamete fusion rises in the cytoplasmic Ca2+ levels as it does in animal gamete fusion. Also, the plants make a block to polyspermy, which is the fertilization of an egg by more than one sperm cell, as do the animal’s cell’s eggs.

"Clinical tests have demonstrated that individuals who experience the ill effects of spermafortis have sperm counts near a thousand times more powerful and rich in spermatozoids than the normal man," he clarifies. "This sort of semen is genuinely like of those warm blooded animals, for example, dolphins, manatees and seals and has properties that make it unfathomably impervious to water. This condition could clarify what happened for this situation yet clinical trials and further tests would be expected to demonstrate this hypothesis," he told neighborhood reporters.

Giant seminophages – The cells presented a large size, having a spherical nucleus either central or eccentric and an oversized large foamy and vacuolated cytoplasm with a well-defined cell border. The cells showed four main features, as follows: 1 – round cells with no ingested sperm (Fig. 22); 2 – elongated cells with no ingested sperm (Fig. 23); 3 - cells with ingested sperm (Fig. 24); 4 - cells with undefined debris (Fig. 25). A few semen smears conjointly given multinucleated giant cells (Fig. 26).

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.

The scale of the testicles is well correlated to the synthesis functionality of the sperm and further gonadal sperm reserves [Parkinson et al., 2004]. The scrotal circumference is the best and the most sophisticated device for estimating the mass of the reproductive organs [Lino et al., 1972; Notter et al., 1987] and the level of testes development [Lunstra et al., 1978] inside the animal. The testicle circumference and histological sections were assessed to determine the efficacy of the vaccine on gonadal features. Analysis of the sub-physiological contents of testicles revealed a direct relationship between the steroid and spermatogenic production. Our research finding shows that the vaccine has a strong effect on the scrotal circumference of immunized ram lambs compared with the control ram lambs (P < 0.05). Furthermore, the microscopic histological outcomes of testicles indicate that the vaccinated ram lambs indicated lower masses of spermatogonium, spermatocytes, and spermatids. The histological observation revealed smaller seminiferous

Page 1 Child Growth and Development: "Life's Greatest Miracle" Paragraph In the video Life's Greatest Miracle, I was informed about how children are conceived, how they develop in the mothers body, and how amazing child birth can be. In the beginning it takes you through the steps of how sperm travels as for looking for an egg to fertilize. Although, in just one teaspoon of sperm there can be over 300 million sperm cells, only around 40% of them are usable. The other 60% can be deformed such as having two tales. The sperm can reach the Fallopian tube within 30 minutes, but it can be a 2 day swim just for sperm to reach an accepting egg. After the sperm that was strong enough to make it through the rough travel have met up with an egg, they

Scientific wordings stress the dependency and fragility of the female egg, while the sperm operates independently and in isolation. Old stereotypes are leading in social effects that are stemmed from the biological imagery of the sperm and the egg. Metaphors that are used to depict the egg and the sperm have the power to naturalize social conventions about gender that are believed to be the truth in reference to the sperm and egg relationship. With the use of new data, scientists did not eliminate gender stereotypes in describing the egg and the sperm, instead they began to describe the egg and sperm in different yet no less damaging terms. Biology’s refusal to portray the egg and the sperm as mutual, goes against evidence that shows the contrary, thus strengthening a disturbing depiction of the reproductive

Each of the 5 egg solutions was observed at 2, 4, 6, 8, 10, 15, and 20 minutes after the initial exposure to sperm. Fertilization was confirmed by the presence of the vitelline envelope surrounding the egg. Both the number of eggs in the field of view of the microscope, as well as the number of eggs fertilized was recorded. For each of the 5 salinity concentrations, a total of 3 trials were

From there the sperm cells travel through the cervical canal into the uterine cavity and then into

Martin, after careful consideration and researching in unique methods, comes to an overall conclusion that there are cultural influences in the way egg and sperm interactions are presented in textbooks. This conclusion has many serious

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.