Chapter 4

Tissue

Tissues

groups of cells that are similar in structure and perform a common or related function

Epithelial Tissue

covers

Connective Tissue

supports

Muscle Tissue

moves

Nervous tissue 

controls 

Histology

study of tissues

Simple Epithelia

single cell layer and found where absorption, secretion, and filtration occur 

Stratified epithelia

two or more cell layers like the skin’s surface

Squamous cells

flattened and scale-like

Cuboidal cells

boxlike

Columnar cells

tall and column shaped

Mrofilament

network of actin and myosin filaments that bring about movement or contraction in a cell types 

Voluntary Muscle

Movement under conscious control (skeletal muscle)

Involuntary Muscle

movement not consciously controlled (cardiac and smooth muscle)

Skeletal Msucle

attached to bones and cause body movements

Muscle fiber

long, cylindrical cells, banded or straited

Cardiac muscle

walls of the heart and contractions push blood through vessels

Intercalated discs

tight junctions that branching cells fit together

smooth muscle

found in walls of hollow organs and squeezes substances through

Neuron

highly specialized nerve cells that generate and conduct nerve impulses

Supporting cells

nonconducting cells that support, insulate, and protect the neurons

Cutaneous cells

skin

Epidermis

top layer od stratified squamous epithelium

Dermis

thick layer of connective tissue

Mucous membrane

line all body cavities that open to the outside of the body (digestive and respiratory)

Serous membrane

moist membrane found in closed ventral body cavities

Pleurae 

thoracic wall and covers the lungs

Pericardium

encloses the heart

Pertitoneum

abdominopelvic viscera