Digestion

Blood Flow Through the Heart Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

Human Respiratory System Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

22 bones in skull 6 in middle ears 1 hyoid bone 26 in vertebral column 25 in thoracic cage 4 in pectoral girdle 60 in upper limbs 60 in lower limbs 2 in pelvic girdle 206 bones in all

Useless Bone Fun Fact Steel is very heavy. To build very high structures architects need to be creative. One architect noticed the structure of a very light, yet very strong bone…the Femur. What was the architect’s name?

Useless Bone Fun Fact His name was Gustave Eiffel

Useless Bone Fun Fact How old is your skeleton? How old is your parent’s skeleton? How old is your grandparent's skeleton?

Useless Bone Fun Fact On average most human skeletons are only 10 years old…Explain how.

Form and Function in Annelids

Groups of Roundworms: Nematoda Class: Oligochaeta Anus Setae Body segments Gizzard Crop Dorsal blood vessel Clitellum Mouth Brain Ganglion Circular muscle Ventral blood vessel Ganglia Longitudinal muscle Nephridia Ring vessels Reproductive organs

Pages 701-7 Eye: Squid have a well developed eye that allows them to see as well as people! Arm: Have 8 arms with suction cups Fin: These help squid change direction when swimming Tentacle: Longer than the arms and have suction cups at the tip only Chromatophores: These spots change size to change the squid’s color for camouflage

Females “in berry” carry developing embryos on swimmerets http://crayfish.byu.edu/crayfish_biology.htm

INTERNAL

ORAL VIEW http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish/Starfish02D.html

http://wwwbio200.nsm.buffalo.edu/labs/tutor/Starfish

AMBULACRAL GROOVE TUBE FEET sit in GROOVE

DIGESTIVE GLAND Makes BILE ABSORBS NUTRIENTS

STOMACH

EUCOELOM OPEN CIRCULATION http://faculty.baruch.cuny.edu/jwahlert/bio1003/echinoderm.html

AMBULACRAL RIDGE AMPULLAE (tops of tube feet)

http://www.k-state.edu/organismic/echinoderms_and_protochordates.htm

DIGESTIVE GLAND GONAD OSSICLES

Caudal Fin Anterior Dorsal Fin Posterior Dorsal Fin Pectoral fin

Spiracle Gill slits Eye

Mouth Lateral Line Nostril

Myomere Skin

Clasper Cloacal opening

Kidneys

Rugae

Spleen Liver

Rectal gland

Gallbladder Intestine

Stomach Heart Testes

Gill Arches

The yolk sac provides nutrients to the developing offspring.