Weight machine exercises
Learning Center
Video: Lat pull-down with weight machine
The lat pull-down targets the side of the chest wall. See how it's done.
Video: Knee extension with weight machine
The knee extension exercise targets the front of the thigh. See how it's done.
Video: Chest press with weight machine
The chest press exercise targets the chest muscles. See how it's done.
Video: Biceps curl with weight machine
The biceps curl builds strength in the upper arm. See how it's done.
Video: Baby's soft spots (fontanels)
A baby's soft spots (fontanels) close when the skull bones fuse together. See how.
Vesicoureteral reflux
Learn about what happens if urine flows backward from the bladder. Usually found in children, this condition boosts the risk of urinary tract infections.
Ventricular fibrillation
Without fast treatment, this heart rhythm problem can cause death within minutes. Learn the symptoms of VFib and what actions to take to save a life.
Vascular rings
Learn more about this condition in which malformations of the aortic arch encircle the windpipe and esophagus and can press against them.
Vaginal agenesis
In this rare condition that occurs before birth, the vagina doesn't develop and the uterus may only develop partially or not at all. Learn about treatment.
Vaccines for adults: Which do you need?
Vaccines offer protection from infectious diseases. Find out how to stay on top of the vaccines recommended for adults.
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