anatomy lab histolgy

simple squamous epithelium

simple squamous epithelium

-composed of a single layer of flat cells

-located in lungs, blood vessels, and digestive tract

-involved in diffusion and filtration

simple cuboidal epithelium

simple cuboidal epithelium

-composed of a single layer of cube-shaped cells

-located in lining of kidney tubules, ducts of salivary glands, and ovaries

-involved in secretion and absorption

simple columnar epithelium

simple columnar epithelium

-composed of a single layer of rectangular-shaped cells

-located in most organs of the digestive tract, including stomach and intestines

-involved in absorption and secretion

goblet cells

goblet cells

-produces mucus

keratinized stratified squamous epithelium

keratinized stratified squamous epithelium

-makes up bulk of epidermis

-composed of 4 layers (stratum basale followed by stratum spinosum, stratum granulosum, and stratum corneum)

keratinized stratified squamous epithelium

-located in areas that experience high levels of wear and tear, including skin, mouth, and throat

pseudostratified ciliated columnar epithelium

pseudostratified ciliated columnar epithelium

-composed of a single layer of cells w/ their nuclei at different levels

-located in respiratory tract, reproductive tract, and nasal cavity

pseudostratified ciliated columnar epithelium

-goblet cells and cilia help produce and move mucus along surface of epithelium

areolar tissue

areolar tissue

-fibers in tissue are loosely arranged

-provides strength, support, and elasticity to body structures

areolar tissue

-located beneath skin, around blood vessels and organs, and between muscles

adipose tissue

adipose tissue

-stores energy in the form of triglycerides

-adipocytes = cells that store energy as fat in adipose tissue

reticular tissue

reticular tissue

-composed of reticular fibers, forming a mesh-like network throughout various organs and tissues

-located in lymph nodes, spleen, bone marrow, liver, kidneys, endocrine glands, and eyes

dense regular connective tissue

dense regular connective tissue

-provides support, protection, and connection within the body

-tendons connect muscles to bones

dense regular connective tissue

-ligaments connect bones to bones

dense irregular connective tissue

dense irregular connective tissue

-forms coverings over structures in the body

hyaline cartilage

hyaline cartilage

-helps bones move smoothly past each other in joints

-located at the ends of bones that form joints

chondrocytes

chondrocytes

-mature cartilage cells

lacunae

lacunae

-small cavities that contain osteocytes

matrix

matrix

-material that surrounds connective tissue cells

elastic cartilage

elastic cartilage

-cartilage with abundant elastic fibers; more flexible than hyaline cartilage

-located in ear, voice box, and eustachian tubes

bone tissue

bone tissue

-hard tissue that supports and protects softer tissues and organs

osteocytes

osteocytes

-bone cell formed when an osteoblast becomes embedded in the matrix it has secreted.

blood tissue

blood tissue

-transport oxygen and nutrients to cells throughout body

erythrocytes

-red blood cells that carry oxygen

leukocytes

-white blood cells that fight infection

skeletal muscle tissue

-voluntary muscle pulls on bones and causes body movements

cardiac muscle tissue

-striated and involuntary, only found in heart

smooth muscle tissue

-involuntary muscle found in the intestines where it pushes food along the digestive tract

smooth muscle tissue

-also located in arteries and veins

nerve tissue

-carries messages back and forth between the brain and every other part of the body