The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the phospholipid bilayer with embedded proteins.

Serotonin may prevent Osteoporosis

Ten percent of all pregnancies are complicated by hypertension. Eclampsia and preeclampsia account for about half of these cases worldwide, and these conditions have been recognized and described for years despite the general lack of understanding of the disease. [1] In the fifth century, Hippocrates noted that headaches, convulsions, and drowsiness were ominous signs associated with pregnancy. In 1619, Varandaeus coined the term eclampsia in a treatise on gynecology. [2, 3]

Sex easily falls to the wayside during pregnancy. Research shows that good sex has a significant impact upon not just the relationship, but also a woman’s ability to have an easeful and even joyful birth. Unfortunately, sex during pregnancy can be quite complicated for a variety of physical and emotional reasons. This week’s video will outline how to overcome these hurdles and make sure you continue to enjoy the wonders of sex as you embark on the first steps of parenthood.

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.

How to Perform Pregnancy Test at Home Video

A new video illustrating the horizontal breast exam technique whihc is performed by doctors for any breast masses or abnormalities.

A hemolytic transfusion reaction is a serious complication that can occur after a transfusion of blood. The red blood cells that were given in the transfusion are destroyed by the patient's immune system. There are other types of allergic transfusion reactions that do not cause hemolysis.

case of capsular contracture and shows how the abnormal capsule tightens around the implant and the problems this causes

Nucleoplasty using Coblation of the Lumbar Spine of herniated disc

The surgeon may use treatment options such as thoracoscopy, electrocautery, laser treatment, resection of blebs or pleura, or open thoracotomy. Other surgical indications are as follows: Persistent air leak for longer than 7 days. Recurrent, ipsilateral pneumothorax.

Living Donor Liver Transplantation

Brought to you by http://nursing-resource.com

NURSING VIDEO ACTUAL CATHETERIZATION PROCEDURE OF MALE. FULL LENGTH VERSION Clear quality photography. This video provides an excellant clinical view of the entire procedure.

General Considerations Because a discussion of reproductive issues may be difficult for some women, it is important to obtain the history in a relaxed and private setting. The patient should be clothed, particularly if she is meeting the provider for the first time. Ordinarily, the patient should be interviewed alone. Exceptions may be made for children, adolescents, and mentally impaired women, or if the patient specifically requests the presence of a caretaker, friend, or family member. However, even in these circumstances, it is desirable for the patient to have some time to speak with the clinician privately. The manner of address should be formal using the title Mrs., Ms., Miss, or Dr. with the patient’s surname, unless the patient requests otherwise. In some settings, it may be appropriate for nursing staff to be involved with history taking. A nurse may be perceived as less threatening, and may be able to take the history in a less hurried manner.1 The provider can verify the history and focus on areas of concern. Alternatively, it may be helpful to ask the patient to complete a self-history form on paper or by computer prior to speaking with the provider. This allows the provider to devote time to addressing positive responses, and ensures that important questions are not missed. Hasley2 showed that responses to a computer-based questionnaire designed to update a patient’s gynecologic history were equivalent to those obtained during a personal interview. Several studies involving patients in non-gynecologic settings have shown that patients are more likely to provide sensitive information when responding to a computer-based questionnaire as opposed to a personal interview or even a paper questionnaire.3 In order to increase a patient’s level of comfort during the interview, questions should be asked in an open-ended and nonjudgmental way. Assumptions should not be made about aspects of the patient’s background such as sexual orientation. At the conclusion of the interview, patients should be asked whether there are concerns that they would like to discuss that were not addressed previously in the interview.

Intrauterine insemination (IUI) is a fertility treatment that involves placing sperm inside a woman's uterus to facilitate fertilization. The goal of IUI is to increase the number of sperm that reach the fallopian tubes and subsequently increase the chance of fertilization

Central vestibular nystagmus results from stimulation, injury, disease of the central vestibular pathways of the brainstem or the cerebellum, or lesion of the vestibular nuclei. It is typically a jerk nystagmus, which can be purely horizontal, vertical or torsional.

Benign paroxysmal positional vertigo is an abnormal feeling of motion triggered by certain provocative positions. The condition is most often attributed to the presence of calcium debris within the posterior semicircular canal. Nystagmus is commonly seen

Breast Implant Surgery - exchanging the breast implants. In this video you can see a Plastic Surgeon performing an exchange of breast implant surgery.As breast implants become more popular more breast implant exchange procedures are being performed. This video shows breast implant removal followed by insertion of a larger breast implant.

She is a twenty years young female presented with large cystic swelling in anterior aspect of neck. The swelling was of size 6cmx 6cm x5 cm ,tense tender, cystic just above sternal nutch.This was diagnosed as large neck abscess ./nRepeated aspiration done but the swelling reappeared. So Incision & Drainage planned under local anaesthesia./nPatient in supine position. Surgery part painted and draped. Local anaesthesia 2% xylocaine with adrenaline used for field block.After giving local anaesthesia, I used a no 11 blade for stab incision at the most prominent part of the swelling, where skin was thin and fluctuation present./nPus drained form that opening. Little dilatation of opening to be done with artery forceps or sinus forceps. Complete pus drainage to be ensured.Little finger can be introduced inside the pus cavity to ensure proper drainage of pus. The cavity I use to clean with a gauge piece. If necessary curette biopsy can be taken from the wall of the cavity.These wounds usually need daily proper dressing for faster healing.