Optic Lobes - Part of the brain associated with vision.Cerebrum - Part of the brain that is associated with memory, pain, and voluntary muscle control.Olfactory Lobe - Part of the frog’s brain associated with the sense of smell.Spinal Nerves - Nerves that lead to and from the spinal cord.Spinal Cord - Main pathway to and from the brain.Truncus Arteriosis - Large artery in a frog that carries blood away from the ventricle into branches that lead to all parts of the body.Ventricle - Chamber of a frog’s heart that pumps blood out of the heart to the lungs and other parts of the body.Pulmonary Veins - The blood vessels that carry blood form the lungs to the left atrium.Left Atrium - The chamber of the heart that receives blood from the lungs.Right Atrium - Chamber of the frogs heart which receives blood from the sinus venosus.Sinus Venosus - Sac that receives blood from the vena cava.Posterior Vena Cava - Large vein that carries blood from the posterior part of the body towards the heart.Anterior Vena Cava - Large vein that carries blood from the anterior part of the body toward the heart.Heart - Pumping organ of the circulatory system (has 3 chambers).Cloaca - Organ through which the products of the frogs digestive and urogenital system pass when discharged from the body.Spleen - Organ in the frog’s circulatory system that makes, stores, and destroys blood cells. Fat Bodies - Masses of fat in the body cavities of frogs.Urinary Bladder - The organ that collects and stores urine until released.Liver - Secretes bile and processes digested food molecules.Large Intestine - Posterior organ of the digestive system which stores undigested food.Pancreas - Gland which secretes digestive enzymes into the duodenum.Duodenum - The anterior (front) part of the small intestine into which food passes from the stomach.Small Intestine - The principal organ of digestion and absorption of digested food.Stomach - Stores food and mixes it with enzymes to begin digestion.Cloacal Opening - Opening of cloaca through which undigested food, urine, eggs, and sperm are passed.įunctions of the Internal Anatomy of a Frog:.Nictitating Membrane - A transparent part of a frog’s lower eyelid that moves over the eye to clean it and protect it.
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