Rat Dissection Laboratory Review.

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Presentation transcript:

Rat Dissection Laboratory Review

5.Mid-line 1. Back? 3. Head ??? 4. Tail ??? 2. Belly?? 6. Sides?

snout rostrum head ? Pinnae Ears: vibrissae whiskers trunk ? manus ? ? Tail Pes ?

Trachea esophagus diaphragm stomach liver spleen Small intestine cecum anus

Digestive System

Digestive System Functions Mouth: Esophagus: Stomach: Sm. Intestine: -villi: Lg. Intestine: Cecum: Rectum/Anus: Liver: Spleen: Find Location- Pancreas: Mesentery: Chews food Joins mouth to stomach Grinds/ breaks down food Absorbs nutrients Increases surface area of sm. Intestine Pass food along to the rectum Re-absorption of water Carry waste to anus; outside of body Gets rid of toxins from blood Filter of red blood cells Beneath the stomach Clear membrane connecting sm. intestine

Male Excretory/Reproductive System ? ? ? ? ? ? ? ? ? ?

Urogenital / Reproductive System

http://www.k-state.edu/organismic/images/rat_male_urogenital1.jpg

Female Excretory/Reproductive System ? ? ? ? ? ? ??

http://www.k-state.edu/organismic/images/rat_female_urogenital

http://www.k-state.edu/organismic/images/rat_female

Excretory/Reproductive System Function- Testes: Kidney: Bladder: Umbilical cord: Testes Urethra Find Location- Uterus: Ureters: Ovaries: Uterine horn: Produce sperm Filters nitrogenous waste from blood Stores liquid waste Nourishes & removes wastes from embryo Produce sperm & testosterone (male hormone) Tube that carries urine out of the body Y-shaped lies along dorsal body wall Connects the kidneys to the bladder At the end of the uterine horn Connects uterus with ovary

Respiratory / Circulatory System ? ? ? ?

Respiratory/Circulatory System Function- Trachea: Lungs: -Alveolli: Heart: Larynx: Artery Veins Diaphragm: Large, and ringed air tube Gas exchange Tiny air sacs 4 chambered organ that pumps blood Voice box Carry blood away from heart (w/ O2) Carry blood toward heart (lacking O2) Muscle across abdominal cavity that helps breathing. Contract: inhale; relax: exhale ? ?

Aorta Left Atrium Right Atrium Right Ventricle Left Ventricle Left Side Which side has Oxygenated blood?________________ Deoxygenated blood?________________ Right Side

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