Thursday, 28 March 2024, 10:03 AM
Site: Animal Class - E Learning and training for animal care
Course: Animal Class - E Learning and training for animal care (Animal Class)
Glossary: Glossary
S

Schwann cells

cells that make up the myelin sheath in a nerve cell

Sclera

the tough outer layer of the eye

Sebaceous glands

glands that secrete sebum (oily substance)

Seizure

physical display of violent cerebral disorder resulting from abnormal brain signalling

Semelparous

having one single reproductive episode in a lifetime

Sensory nerves

conduct nerve impulses from a structure or sensory organ towards the central nervous system

Septum

a partition that separates two chambers, as in the heart and nasal cavity

Simple epithelium

epithelium that consists of one layer of cells on a basement membrane

Sinoatrial node (SA node)

a small area of cells in the wall of the right atrium of the heart, where the electrical impulse is generated; also known as the natural pacemaker 

Sinus

an air-filled cavity in the skull; any blind-ending tract in a tissue