5
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
V/Q

ventilation perfusion

vaccination

The means of producing immunity by stimulating the formation of antibodies.

vagina

The muscula passage, forming part of the femal reproductive system, between the cervix and the external genitalia.

vaginismus

Vaginal tightness.

vaginitis

Inflammation of the vagina.

valve

A structure that allows fluid to flow in one direction only, preventing backflow.

variable

Liable to vary or change.

varicella

Another name for chickenpox.

varicoele

Enlargement of the veins in the scrotum.

varicose

Abnormally swollen.

varicose vein

A vein that is swollen, distended and twisted, usually due to weakness of its valves.

vas deferens

The tube that conveys sperm out of the testicle in a male.

vascular

Relating to blood vessels.

vascular dementia

A form of dementia caused by impaired blood supply to the brain.

vascular malformation

Abnormalities in the blood vessels.

vascularisation

The process of blood flowing through the area.

vasculitic disorder

Disorders characterised by inflammation of the blood vessels.

vasculitis

Inflammation of blood vessels

vasectomy

The operation of male sterilisation.

vasodilation

A temporary widening or expansion of blood vessels to allow increased blood flow

vasomotor rhinitis

A runny nose (rhinitis) due to congestion that is not caused by infection or allergy. It may be a response to irritation of the nasal lining, such as by pollution, or to drugs or strong emotions.

vein

A blood vessel that carries blood towards the heart.

vellous hair

Short, fine, barely noticeable hair.

venogram

A diagnostic procedure that allows veins to be seen undrr X-ray after they have been injected with a special substance that is opaque to X-rays. It is used to detect abnormalities or disease of the veins.