Shark Anatomy

H.S. Bio 2012

External Anatomy – (form = function)

• Shape = fusiform – • Olfactory= extremely sensitive• Spiracles- efficient respiration

Shape – form = functionwhere does the shark fit?

Olfactory System of Shark

• Not connected to mouth or respiration• Step 1- water in -incurrent appeture• Step 2- olfactory lamellae-series of folds• Step 3- info to olfactory bulb• Step 4 -info to olfactory lobe on front of brain• Step 5- water out –excurrent appeture

Lamelle

http://203.250.122.194/lecture/histology/htmht3/His50.htm

Shark Brain

Spiracles

Body Systems

• Respiratory• Circulatory• Digestive• Urogenital• Integumentary

Respiratory System

Passive Transport in the Gills

Basic Circulatory System

Shark Heart

Digestive System

Human Digestive System

Urogenital System

• Excretory – Kidneys (osmosis revisited)• Sharks live in salt water• shark blood = 2.4 % urea compared to .01 to .03 in other vertebrates

Urogenital System /female reproductive

Integumentary System

• Placoid Scales

Types of Scales

Form = Function

• Shark the ultimate _______________?