Sunday, 5 May 2024, 12:04 AM
Site: VetLogic - E Learning and training for Vet Nurses
Course: VetLogic - E Learning and training for Vet Nurses (VetLogic)
Glossary: Glossary with audio assistance
S

Salts

synonym for electrolytes

Saphrophite

an organism living and feeding on dead and putrefying matter

Sarcolemma

membrane surrounding a skeletal muscle fibre

Satiety

the satisfaction of appetite

Scattered radiation (scatter)

X-rays which have collided with matter, lost some energy and changed direction

Screen film

X-ray film which is placed in a cassette containing intensifying screens prior to use

Sebaceous

relating to glands found in the dermis of the skin, that produce sebum

Seborrhoea

Excessively oily skin, due to overproduction of sebum

Sebum

an oily substance produced by sebaceous glands in the skin

Second filial generation

offspring produced by breeding from two individuals from the F1 generation; denoted as F2 in genetic notation

Sensory fibres

nerve fibres that carry impulses towards the central nervous system

Septicaemia

the presence of pathogenic bacteria in the blood

Serum

the fluid that separates from blood when it clots

Sex chromosomes

the pair of chromosomes that determine the gender of an individual

Sex-limited gene

gene that influences a characteristic seen in either the male or the female

Sex-linked gene

gene carried on one of the sex chromosomes

Sharpness

the clarity of structures on a radiograph

Shift to the left

increased numbers of immature white blood cells circulating in the blood

Sinus

cavity within a bone or other tissue; paranasal sinuses are air-filled cavities in the bones of the face

Smooth endoplasmic reticulum

system of membrane-bound tubes and sacs that is involved in the synthesis of lipids

Smooth muscle

muscle tissue with no striations that is not under voluntary control

Solubilised

a substance is dissolved in another

Solute

the ionic component of an electrolyte

Solvent

the liquid component of an electrolyte

Somatic cells

the classification of every cell in the body except for the germ (reproductive) cells

Somatic damage

damage to the tissues caused by X-rays which becomes apparent during the individual's lifetime

Somatic motor nerve

nerve fibres that carry impulses from the central nervous system to a somatic structure

Somatic sensory nerve

nerve fibres that carry impulses from a somatic structure to the central nervous system

Somatic structures

structures that lie in the skin and the musculoskeletal system

Special sense organs

organs that have evolved to house the exteroreceptors of the body

Sphincter

muscular ring that controls flow in and out of an organ

Spinal nerves

any of the pairs of nerves that arise from the spinal cord

Stable tissues

Repair by regeneration is sometimes possible.

Steatorrhoea

the presence of excess fat in faeces

Stercobolin

bile pigment found in faeces and responsible for the characteristic colour of faeces

Sterilisation

the destruction of all microorganisms and their spores

Striated muscle

muscle fibres that have striations and are under voluntary control; also called skeletal muscle

Subcutaneous

under the skin

Subcutis

the deepest layer of skin composed mainly of adipose tissue

Sudoriferous gland

gland in the dermis of the skin that secretes sweat

Sympathetic nervous system

Syncope

fainting

Systole

contraction stage of the cardiac cycle. The term applies to both atrial and ventricular contraction.