Pulmonary circulation is the portion of the cardiovascular system which carries deoxygenated blood away from the heart, to the lungs, and returns oxygenated (oxygen-rich) blood back to the heart. The function of pulmonary circulation is to exchange carbon dioxide for oxygen in the blood. It is the passage of blood from the heart to the capillaries of the lungs, where the gases are exchanged, and back to the heart to be pumped around the body.

What is an ingrown hair cyst? An ingrown hair cyst refers to an ingrown hair that turns into a cyst — a large bump that extends between the skin’s surface and deep underneath it. The appearance is a cross between a regular ingrown hair and an acne cyst, though this is a different condition. These types of cysts are common among people who shave, wax, or use other methods to remove their hair. Although you may be eager to get rid of these cysts simply because of their appearance, it’s also important to watch for signs of an infection. Keep reading to learn what causes these cysts to form, plus how to treat them and prevent them from returning.

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When the hematocrit rises to 60 or 70%, which it often does in polycythemia, the blood viscosity can become as great as 10 times that of water, and its flow through blood vessels is greatly retarded because of increased resistance to flow. This will lead to decreased oxygen delivery.

Delivery using foreceps

Demonstration of vertical mattress suturing technique for laceration repair or wound closure in the operating room.

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Using 3D animations we have come up with a new way of demonstrating how to perform portable ultrasound examinations

Your temporomandibular joint is a hinge that connects your jaw to the temporal bones of your skull, which are in front of each ear. It lets you move your jaw up and down and side to side, so you can talk, chew, and yawn. Problems with your jaw and the muscles in your face that control it are known as temporomandibular disorders (TMD). But you may hear it wrongly called TMJ, after the joint.

Basic Abdominal Clinical Exam

This is a surgical video that shows the removal of a volar ganglion cyst. This is a common surgical procedure and this video may help you better understand the steps that occur during the procedure.

Cluster headaches, which occur in cyclical patterns or clusters, are one of the most painful types of headache. A cluster headache commonly awakens you in the middle of the night with intense pain in or around one eye on one side of your head. Bouts of frequent attacks, known as cluster periods, can last from weeks to months, usually followed by remission periods when the headaches stop. During remission, no headaches occur for months and sometimes even years. Fortunately, cluster headache is rare and not life-threatening. Treatments can make cluster headache attacks shorter and less severe. In addition, medications can reduce the number of cluster headaches.

ACTUAL CATHETERIZATION A clinical view of insertion into the male urethra. A 14 french coude cath was used.

Screening is looking for cancer before a person has any symptoms. This can help find cancer at an early stage when it may be easier to treat. Lung cancer may have spread by the time a person has symptoms. One reason lung cancer is so serious is because it usually is not found until it has spread and is more difficult to treat. Screening may provide new hope for early detection and treatment of lung cancer. Scientists study screening tests to find those with the fewest risks and most benefits. They look at results over time to see if finding the cancer early decreases a person's chance of dying from the disease.

The surgical video details a robotic assisted hysterectomy in a patient with early stage endometrial/uterine cancer. Anatomy of the pelvis and the technique of a robotic hysterectomy is demonstrated in this video.

This is an animation of the biomechanics involved in relocating a dislocated shoulder.

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Pelvic organ prolapse occurs when a pelvic organ-such as your bladder-drops (prolapses) from its normal place in your lower belly and pushes against the walls of your vagina. This can happen when the muscles that hold your pelvic organs in place get weak or stretched from childbirth or surgery.