UNIT 2: Diversity Of Cells Flashcards
Tissue
A group of similar cells that are modified or adapted to carry out the same function
Epithelial tissue
Covering layer of tissue for the outside of body and on internal organs and cavities within the body
Functions in protection, absorbing, and / or secretion depending on location. Eg skin, kidney and gland tubules , blood vessels
Connective tissue
Sparsely located cells In a matrix secreted by those cells - functions in binding together and supporting other tissues eg blood, cartilage, adipose, bone, tendons
Muscular tissue
Long excitable cells (muscle fibre) capable of generating movement - functions in creating movement of of limb and appendages as well as in digestion and pumping blood around the body
Nervous tissue
Excitable cells (neurons) consisting of a cell body, dendrites and axons - functions in sensing stimuli and transmitting signals from one part of the body to the other
Meristematic tissue
Rapidly divides by mitosis to give rise to the other three types of plant tissue
Dermal tissue
Covering layer of tissue - functions in protection
Vascular tissues
Functions in transport of substances around the plant. There are two types of vascular tissue
Xylem
Transports water and minerals
Phloem
Transports glucose and amino acids
Ground tissue
Makes up the bulk of plants and comprises the tissue between the dermis and vascular tissues - functions in photosynthesis, storage, and support
Organ
Group of tissues that carry out a particular function
Animal - heart, lungs, kidneys
Plant - leaf, flowers, stem
Organ system
Group of organs that carry out a number of linked functions
Animal - circulatory system
Plant - root system
Tissue / cell culture
The growth of cells in a nutrient medium outside a living organism
