Rat Dissection Vocab and terms

Pinna def

ears, catch sound

eyes def

able to see and hunt

vibrissae

whiskers, sense vibrations

nares

nostrils, smell

incisors

gnawing teeth

hair

provides insulation

tail

used for balance

mammary papillae

opening to mammary glands

massester

main chewing muscle, closes jaw

liver

produces chemicals and bile secreted for digestion of fats/ many other functions

spleen

filters the blood for the immune system

small intestine

digestion of food and absorption of nutrients

cecum

bulge in 1st part of the large intestines; absorbs nutrients

mesentery

holds intestines close together

stomach

add acid, grind and mash food

duodenum

add trypsin to digest proteins and bile to digest fats

jejunum

finish digestion and absorb nutrients

lleum

finish digestion and absorb nutrients

cecum

J pouch where small and large intestine meet, contain bacteria to digest plant material

rectum

short, rene or colon that leads to the anus

lung

breathing organ diffuses and bonds O2 to blood cells in capillaries

trachea

airway to bronchial tubes

bronchus

right and left rubes from trachea to lungs

diaphragm

expands chest cavity to bring more O2 in lungs

heart

4 chambered muscle, receives and circulates

right and left atrium

RECEIVE blood from veins and arteries

right and left ventricles

pump blood to lungs and body

superiors and inferior vena cava

brings deoxygenated blood to right atrium

aorta arch

transports oxygen rich blood from left ventricle pumped to arteries