Shark Internal Anatomy Flashcards

Questions and Answers

What is the function of the liver in sharks?

Produces bile

Stores oils to help the shark float (correct)

Filters blood

Produces eggs

What are gill rakers?

Structures that prevent large food particles from entering the gills.

What shape is the stomach of a shark?

'J' shaped.

What is rugae in the context of shark anatomy?

Internal folds inside the stomach that allow it to expand. Signup and view all the answers

What is the function of the pyloric sphincter?

Controls how much food exits the stomach. Signup and view all the answers

What does the esophagus do?

Transports food from the throat to the stomach. Signup and view all the answers

What is the duodenum?

'U' shaped part of the stomach that receives bile from the gall bladder. Signup and view all the answers

What is the purpose of the spiral valve intestine?

Increases surface area for nutrient absorption. Signup and view all the answers

What does the spleen do?

Produces, breaks down, and stores red blood cells. Signup and view all the answers

What is the function of the gall bladder?

Stores bile. Signup and view all the answers

What is the cloaca?

Chamber where digestive, urinary, and genital tracts all open to the outside. Signup and view all the answers

What role does the pancreas play?

Makes enzymes needed for digestion. Signup and view all the answers

What do the kidneys do in sharks?

Extract salts from the urine and put them back in the blood. Signup and view all the answers

What is the function of the rectal gland?

Removes excess salt from the blood. Signup and view all the answers

What is the advantage of a cartilage skeleton in sharks?

It is strong but lighter than bone, allowing tight turns. Signup and view all the answers

What does the ovary produce?

Eggs. Signup and view all the answers

What do testes produce?

Sperm. Signup and view all the answers

What does the brain control in sharks?

Bodily functions like sight, smell, and muscle coordination. Signup and view all the answers

What is the pharynx in shark anatomy?

The shark's throat, where gills open. Signup and view all the answers

What is the structure of the heart in sharks?

A 2 chambered structure that pumps blood to the gills. Signup and view all the answers

What is the function of the dorsal aorta?

Delivers oxygenated blood to the shark. Signup and view all the answers

Study Notes

Shark Internal Anatomy

Liver: Large organ that stores oils and fats, aiding in buoyancy and energy storage.
Gill Rakers: Structures that filter out large food particles, protecting the gills.
Stomach: "J" shaped organ responsible for digestion processes.
Rugae: Internal folds within the stomach allowing for expansion during digestion.
Pyloric Sphincter: Valve regulating the passage of food from the stomach to the intestine.
Esophagus: Tube that connects the throat to the stomach, transporting food.
Duodenum: "U" shaped section of the stomach that receives bile from the gallbladder for digestion.
Spiral Valve Intestine: Coiled section of the intestine that enhances surface area for nutrient absorption.
Spleen: Triangular organ that produces, breaks down, and stores red blood cells.
Gall Bladder: Storage for bile, aiding in the digestion of fats.
Cloaca: Common chamber for the digestive, urinary, and reproductive tracts.
Pancreas: Organ that produces digestive enzymes essential for breaking down food.
Kidneys: Long structures that filter salts from urine, helping maintain saline levels in the shark's body.
Rectal Gland: Finger-shaped gland responsible for excreting excess salt from the blood.
Cartilage Skeleton: Framework of strong yet lightweight cartilage, promoting agility and buoyancy as sharks lack a swim bladder.
Ovary: Reproductive organ that produces eggs.
Testes: Male reproductive organ that generates sperm.
Brain: Central control unit for bodily functions, including sight, smell, and muscle coordination.
Pharynx: The throat of the shark where the gills are located, opening to the pharynx.
Heart: Two-chambered organ that pumps blood to the gills for oxygenation.
Dorsal Aorta: Major artery responsible for transporting oxygenated blood throughout the shark's body.

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Description

Explore the fascinating world of shark anatomy with these flashcards focused on internal organs. Learn about key structures such as the liver, gill rakers, stomach, and rugae, and understand their functions in helping sharks thrive in their aquatic environment.