cells of similar type that work together form tissue.
4 kinds:
lives surfaces inside and outside of the body important in forming glands( cluster of cells that secrete something) and ducts # of layers, shape of cells 1 layer- simple epithelium 2 or more layers- stratified epithelium squamous- flat, irregular shape, like fried egg protect against abrasions usually in simple layer\glands columnar- column-shaped cell connects tissues together, other body parts, protection, support, cushioning of other tissues loose connective tissues- a gel-like network of proteins and cells that support tissues above it. dense connective tissue- strap like → ligaments; bone to bone, or tendons; muscle to bone cartilage- flexible but rigid bone- harder, mineralized produces all blood cells and cells of the immune system blood- liquid connective tissue (plasma- fluid part) all the nuterients, wastes, antibodies, hormones, etc. are dissolved and circulated by the blood adipose- fat storage, energy, hormnones, cushioning and insulation responsible for general movement externally moves things inside our bodies as well skeletal muscle: voluntary, striated with many nuclei smooth muscle: involuntary, not striated cardiac muscle: heart, involuntary, striated, intercalated discs important to sensing and responding to our internal/external conditions everywhere you have a nerve/ feel pain
Organs will have 2 or more tissues that work together to do a task.
organs that do a related job (like a body process)form organ systems.
anterior- pigs head end
posterior- tail end
dorsal- pigs back
ventral- belly
midline- down the middle of the body
differences between humans and pigs
urinary system- filtering our blood and removing waste
kidneys- filter blood and produce urine from the blood waste ureters- tubes that carry urine from the kidneys to the bladder bladder- a muscular sac that stores and expels of the urine. urethra- tube that drains urine from the bladder to outside
Sex organs
male reproductive systems
testes- primary sex organ (sperms, hormones) epididymis- sperm is stored/ matured vasdefferns =carry sperm from the epididymis to the urethra in males, the urethra is used for dispelling sperm and urine. in males, the urethra runs through the penis in pig, find urethra right by umbilical cord. under the skin female reproductive systems
ovaries- primary sex organ, makes eggs and hormones uterine/fallopian tubes- carry eggs from ovaries to uterus. uterus- organ that holds the fetus
Tissues
