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Fertilization and Implantation in human
Fertilization and Implantation in human samer kareem 3,120 Views • 2 years ago

Millions of sperms are deposited into the vagina during sexual intercourse. The sperms make their way through the cervix into the uterus and then on to the fallopian tubes. As they swim along this way their numbers decline. Only a few hundred sperm will get close to the egg. During the trip, sperm prepare themselves to meet the egg by subtle alterations of their heads and movement patterns. Once inside the fallopian tube, the sperm attracts the egg by releasing a chemical. The egg is surrounded by a protective covering called the zona pellucida, which allows only one sperm to penetrate it. Once inside the egg, the head of the fertilizing sperm releases its genetic contents, which fuses with the nucleus of the egg. Fertilisation is now complete. Sperm are able to survive for 2-3 days within the female's reproductive tract. The length of the time that a woman's egg can be fertilized by a man's sperm ranges from 12-24 hours.

Anterior Release Test
Anterior Release Test Anatomist 8,557 Views • 2 years ago

Anterior Release Test

Paralisis Del Sueño, Como Combatir El Insomnio, Insomnio Tratamiento, Consejos Para Dormir Bien
Paralisis Del Sueño, Como Combatir El Insomnio, Insomnio Tratamiento, Consejos Para Dormir Bien Marky123 1,881 Views • 2 years ago

http://cure-insomnio-para-siempre.good-info.co/ Paralisis Del Sueño, Como Combatir El Insomnio, Insomnio Tratamiento, Consejos Para Dormir Bien. https://youtu.be/kYvaazgJMv4 Seguramente después de haber leído usted se habrá hecho una pregunta clave: ¿Comer mal afecta al insomnio? La respuesta es sí. Una mala dieta es razón de suficiente para padecer de insomnio y es por ello que es importante que usted modifique sus conductas alimenticias si quiere disfrutar de un sueño reparador. La ingesta exagerada de carbohidratos y grasas puede llegar a perturbar nuestro metabolismo y dificulta nuestra digestión, haciendo de este modo, le sea imposible conciliar el sueño. ¿Se Puede Combatir El Insomnio Con Una Dieta? Lo primero que debe saber acerca de la dieta y su relación con el insomnio es que el mejor régimen para terminar con es la prevención y la planificación: haga una rutina firme, coma siempre a la misma hora y evite ingerir alimentos media hora antes dormir. También le recomiendo que no abuse de la cafeína ni de los carbohidratos. Evite además los alimentos que no sean fáciles de digerir o que le provocan algún tipo de alergia. ¿Existen Alimentos Que Combatan El Insomnio? Hay algunos elementos que pueden ayudarlo a conciliar el sueño y sentirse relajado y distendido a la hora de prepararse para el descanso. Tenga en cuenta, fundamentalmente, si usted padece de insomnio, que lo ideal es optar por una cena frugal y reposada a fin de evitar sobresaltos y condiciones que no le permitan dormir profundamente. ¿Qué Alimentos Debe Considerar Para Evitar El Insomnio? Hay una serie de alimentos concretos que usted puede considerar en si dieta para irse a la cama con la expectativa de un mejor sueño. Estos son alguno de los alimentos que debe evitar: Paralisis Del Sueño, Como Combatir El Insomnio, Insomnio Tratamiento, Consejos Para Dormir Bien

HIV Virus Life Cycle and Drug Reaction
HIV Virus Life Cycle and Drug Reaction Magdy 11,445 Views • 2 years ago

Binding and Fusion: HIV begins its life cycle
when it binds to a CD4 receptor and one of two
co-receptors on the surface of a CD4+
Tlymphocyte. The virus then fuses with the host
cell. After fusion, the virus releases RNA, its
genetic material, into the host cell.

Reverse Transcription: An HIV enzyme
called reverse transcriptase converts the singlestranded HIV RNA to double-stranded HIV DNA.

Integration: The newly formed HIV DNA
enters the host cell's nucleus, where an HIV
enzyme called integrase "hides" the HIV DNA
within the host cell's own DNA. The integrated
HIV DNA is called provirus. The provirus may
remain inactive for several years, producing few or
no new copies of HIV

Transcription: When the host cell receives a
signal to become active, the provirus uses a host
enzyme called RNA polymerase to create copies of
the HIV genomic material, as well as shorter
strands of RNA called messenger RNA (mRNA).
The mRNA is used as a blueprint to make long
chains of HIV proteins.

Assembly: An HIV enzyme called protease cuts
the long chains of HIV proteins into smaller
individual proteins. As the smaller HIV proteins
come together with copies of HIV's RNA genetic
material, a new virus particle is assembled.

Budding: The newly assembled virus pushes out
("buds") from the host cell. During budding, the new
virus steals part of the cell's outer envelope. This
envelope, which acts as a covering, is studded with
protein/sugar combinations called HIV
glycoproteins. These HIV glycoproteins are
necessary for the virus to bind CD4 and coreceptors. The new copies of HIV can now move
on to infect other cells.

Intravitreal Injection Technique
Intravitreal Injection Technique Anatomist 12,939 Views • 2 years ago

Instructional video explaining intravitreal injection technique used in endophthalmitis (a serious eye infection), macular degeneration, and other eye diseases.

Horrible Abscess On Thigh
Horrible Abscess On Thigh samer kareem 8,046 Views • 2 years ago

An abscess is a tender mass generally surrounded by a colored area from pink to deep red. Abscesses are often easy to feel by touching. The middle of an abscess is full of pus and debris. Painful and warm to touch, abscesses can show up any place on your body. The most common sites are in your armpits (axillae), areas around your anus and vagina(Bartholin gland abscess), the base of your spine (pilonidal abscess), around a tooth (dental abscess), and in your groin. Inflammation around a hair follicle can also lead to the formation of an abscess, which is called a boil (furuncle).

A foot of gauze out of nipple abscess
A foot of gauze out of nipple abscess samer kareem 8,578 Views • 2 years ago

A foot of gauze out of nipple abscess

Robot-Assisted Heart Surgery
Robot-Assisted Heart Surgery galerobinette 11,496 Views • 2 years ago

The Da Vinci Surgical System Robot has benefits for the patient undergoing mitral valve repair and the surgeon performing the procedure. Cardiothoracic Surgeon Thomas Molloy, MD, of St. Joseph Medical Center in Tacoma, WA explains.

Subcuticular Skin Suturing
Subcuticular Skin Suturing DrPhil 15,745 Views • 2 years ago

Subcuticular Skin Suturing

Learn How to Suture a Banana
Learn How to Suture a Banana Mohamed Ibrahim 15,415 Views • 2 years ago

Learn How to Suture a Banana

Goniotomy for Congenital Glaucoma
Goniotomy for Congenital Glaucoma DrHouse 14,413 Views • 2 years ago

A technique of goniotomy. Sent by Prof. Dr. Daljit Singh. I think it has been done by Dr. Jan Worst and the video is probably more than 15 years old.

stop gunshot wound bleeding in 15 seconds
stop gunshot wound bleeding in 15 seconds samer kareem 3,483 Views • 2 years ago

stop gunshot wound bleeding in 15 seconds

Grisp Reflex
Grisp Reflex Medical_Videos 5,373 Views • 2 years ago

Grisp Reflex

Lembert Suture
Lembert Suture Mohamed Ibrahim 13,983 Views • 2 years ago

Lembert Suture for the intestine

Treat breast engorgement
Treat breast engorgement samer kareem 6,580 Views • 2 years ago

Many mothers notice engorgement, or over-filled breasts, at some point or the other while they are breast-feeding their baby and it is especially common to experience when your baby is first born and you are just starting to make milk. So for the first couple of days you make colostrum and then 2-5 days later your milk comes in. And sometimes it comes in with a vengeance and all of the sudden you feel really full and it can be painful and very uncomfortable. Normally your milk supply will even out and start to work well with your babys demand, so it is kind of a supply and demand type of function, but until then, if you feel engorgement, there are a few things you can do to relieve it. If you are nursing your baby on demand this will usually help to self-regulate and most young babies want to eat every 2-3 hours and sometimes even every hour. So, basically, the more often your breasts are emptied the more relief you will feel. But on the same hand, the more you nurse the more milk your body will probably produce. This is why it is good to go off of your babys cues because then you will make what your baby needs and hopefully not much more. But if you are making more than your baby needs and you find that you are still full after feedings you will probably have to either manually express some milk or pump it off, so have a good pump available in case you need to, and if you don't, you can manually express the milk by gently massaging from the armpit down towards the nipple. And you can also try using heat prior to nursing your baby or pumping milk off and this will also help to relax things and help you to get the milk out. Take a warm shower and then feed your baby or use a warm compress.

Heart Transplant Video
Heart Transplant Video Surgeon 95,252 Views • 2 years ago

summary of an orthotopic heart transplant

Meckel's Diverticulum Surgery
Meckel's Diverticulum Surgery samer kareem 2,024 Views • 2 years ago

Meckel's Diverticulum is a vestigeal remnant of vitellointestinal duct. Its a true diverticulum as it contains all three layers of intestine. It is usually presents at anti mesenteric burder. Usually 2 cm (range 1- 12 cm ) in length, found in 2 % of population , and situated around 2 feet of Ileaocecal junction. 50 % cases it contains gastric mucosa , but may also contain colonic, duodenal or pancreatic mucosa .male : female ration in symptomatic cases is 3 : 1.It may mimic acute appendicitis, so in cases where one is going for surgery for appendicitis , must search for meckel's diverticulum........

Clavicle Giant Cell Tumor Resection
Clavicle Giant Cell Tumor Resection DrHouse 12,200 Views • 2 years ago

wide resection of giant cell tumor ,then strut grafting using free fibula graft,knowles pinning of the graft.

Transfemoral Aortic Valve Replacement
Transfemoral Aortic Valve Replacement samer kareem 1,276 Views • 2 years ago

Aortic valve replacement is a procedure in which a patient's failing aortic valve is replaced with an artificial heart valve. The aortic valve can be affected by a range of diseases; the valve can either become leaky (aortic insufficiency / regurgitation) or partially blocked (aortic stenosis).

IVUS Vascular Imaging
IVUS Vascular Imaging Emery King 10,170 Views • 2 years ago

A DMC patient suffering from an artery blockage is helped by Intravascular Ultrasound (IVUS), new technology that reveals the condition of the artery and may prevent heart attacks. ~ Detroit Medical Center

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