Frog Body Parts And Functions Essay

623 words - 2 pages

Frog Body Parts and Functions

Anatomy of a Frog's Head

External Anatomy of the Frog

Functions of the External Anatomy of the Frog
• Nictitating Membrane - A transparent part of a frog's lower eyelid that moves over the eye to clean it and protect it.
• Cloacal Opening - Opening of cloaca through which undigested food, urine, eggs, and sperm are passed.

Internal Anatomy of a Frog

Functions of the Internal Anatomy of a Frog:
• Stomach - Stores food and mixes it with enzymes to begin digestion.
• Small Intestine - The principal organ of digestion and absorption of digested food.
• Duodenum - The anterior (front) part of the small intestine into which food passes from the stomach
• Pancreas - Gland which secretes digestive enzymes into the duodenum.
• Gall Bladder - Sac which stores bile.

Functions of the Internal Anatomy of a Frog:
• Large Intestine - Posterior organ of the digestive system which stores undigested food.
• Liver - Secretes bile and processes digested food molecules
• Urinary Bladder - The organ that collects and stores urine until released.
• Fat Bodies - Masses of fat in the body cavities of frogs. Needed for hibernating and mating
• Spleen - Organ in the frog's circulatory system that makes, stores, and destroys blood cells.
• Cloaca - Organ through which the products of the frogs digestive and urogenital system pass when discharged from the body.

Anatomy of a Frog Heart

Functions of the Frog Heart
• Heart - Pumping organ of the circulatory system (has 3 chambers).
• Anterior Vena Cava - Large vein that carries blood from the anterior part of the body toward the heart.
• Posterior Vena Cava - Large vein that carries blood from the posterior part of the body towards the heart.
• Sinus Venosus - Sac that receives blood from the vena cava

Functions of the Frog Heart • Right Atrium - Chamber of the frogs heart which
receives blood...

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