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12 Cards in this Set

  • Front
  • Back
Which living organisms exhibit an exoskeleton?
Arthropods
What are the two types of endoskeletons?
Axial and appendicular
What is the axial skeleton?
Basic framework - skill, vertebral column, rib cage
What is the appendicular skeleton?
Limb bones
Pelvic and pectoral girdles
What is chondrin? What secretes it?
A firm but elastic matrix composing the cartilage
Chondrocytes secrete it
When is cartilage most prominant?
In mammalian embryonic development
What happens to cartilage during development?
It calcifies - when calcium builds up and causes hardening
How is cartilage nourished?
From capillaries in connective tissue - via diffusion
Cartilage is said to be 'avascular', what does this term mean?
That there are no blood/lymph vessels present. Cartilage is also devoid of nerves
What are the two types of bone?
Compact and spongy (cancellous)
What is red bone marrow used for?
Blood cell formation
What is yellow bone marrow?
An inactive marrow - infiltrated by adipose tissue