Lab#1: The Vertebrate Skeleton

Question 1

Mammal bone characteristic

Answer 1

Heavy,
Mat (not glossy/translucent)
Round shape
THICK CORTEX
SPONGY BONE = DENSE AT ENDS
Texture = woody
Epiphyses fused in adults

Question 2

Fish bone characteristics

Answer 2

Light
Glossy
Semitranslucent
Flat and angular
NO CORTEX
NO SPONGY BONE
Woody texture
No Epiphyses

Question 3

Bird bone characteristics

Answer 3

Light
Maybe glossy
Not translucent
Angular at some ends
THIN CORTEX
THIN SUPPORT SPONGY BONE
Smooth texture
Cartilaginous epiphyses

Question 4

Cortex/Cortical bone def

Answer 4

Outer layer of bone (forms the surface of most skeletal elements)

Question 5

Trabecular or “spongy” bone def

Answer 5

Porous type of bone tissue found in the interior of bones.

Question 6

Each INNOMINATES = made from …

Answer 6

ilium, ischium, and pubis

Question 7

The sacrum articulates with the pelvis (two …), each made up of the ilium, ischium, and pubis

Answer 7

INNOMINATES