Shark Anatomy and Physiology

The video tutorial covers the internal dissection of a female shark, focusing on the challenges of cutting through its thick skin, examining the liver's role in buoyancy, and exploring the digestive and reproductive systems. The liver's oil content is highlighted as a buoyancy aid, while the digestive system's unique features, such as the spiral valve intestine, are explained. The discovery of baby sharks within the reproductive system is also discussed.

What is one of the main challenges when starting the dissection of a shark?

• The shark's skin is very thick.

• The shark's skin is very smooth.

• The shark's skin is very colorful.

• The shark's skin is very thin.

Why do sharks have a liver full of oil?

• To store energy for long migrations.

• To help them digest food more efficiently.

• To provide buoyancy in the water.

• To protect their internal organs.

What is the primary function of the shark's liver?

• To produce red blood cells.

• To store bile.

• To filter toxins.

• To aid in buoyancy.

What is the shape of the shark's stomach?

• S-shaped

• L-shaped

• J-shaped

• C-shaped

What is the function of the rugae in a shark's stomach?

• To store excess food.

• To increase surface area for digestion.

• To protect the stomach lining.

• To help the shark float.

What is unique about the shark's small intestine?

• It is used for storing food.

• It is located outside the body.

• It is longer than in most animals.

• It has a spiral valve to increase surface area.

What is the role of the rectal gland in sharks?

• To produce bile.

• To excrete excess salt.

• To aid in digestion.

• To store fat.

What do baby sharks feed on before birth?

• Seaweed

• Yolk sacs

• Small fish

• Plankton

How many baby sharks were found in the dissected shark?

• Five

• Six

• Four

• Three

What is the next organ to be dissected after the digestive system?

• The kidneys

• The lungs

• The heart

• The brain