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URI bio 220 exam 2 Questions and Correct
Answers/ Latest Update / Already Graded
What are the three main components of the skeletal system?
Ans: Bones, cartilage, and ligaments.
What is the primary function of bones?
Ans: Support, protection, movement, storage, and blood cell
production.
What type of cartilage is found in the nose and ears?
Ans: Hyaline cartilage.
What is the role of ligaments in the skeletal system?
Ans: Ligaments connect bone to bone and allow some
movement while preventing excessive movement.
What is the difference between spongy and compact bone?
Ans: Compact bone is dense and forms the outer layer, while
spongy bone is lighter and found inside bones, containing
trabeculae.
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What are the two processes of bone development?
Ans: Intramembranous ossification and endochondral
ossification.
What is the function of osteoblasts?
Ans: Osteoblasts form bone by depositing calcium phosphate
crystals into the matrix.
What do osteocytes do?
Ans: Osteocytes maintain the bone matrix and are connected
at gap junctions.
What is the role of osteoclasts?
Ans: Osteoclasts resorb bone by breaking down the matrix
through exocytosis.
What is the extracellular matrix of bone tissue composed of?
Ans: 35% protein and 65% mineral content, including collagen
and proteoglycans.
All rights reserved © 2025/ 2026 |
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What is the significance of the epiphyseal plate?
Ans: The epiphyseal plate is where bone growth occurs and
eventually closes between ages 12-25.
What is the medullary cavity?
Ans: The medullary cavity is the central cavity of bone where
blood cell formation occurs.
What are the structural differences between long bones and flat
bones?
Ans: Long bones have a diaphysis and epiphyses, while flat
bones are thin and often curved.
What are the types of cartilage growth?
Ans: Appositional growth (growth from the outside) and
interstitial growth (growth from within).
What is the function of the periosteum?
Ans: The periosteum is a connective tissue membrane that
covers the outer surface of bones and contains blood vessels
and nerves.
All rights reserved © 2025/ 2026 |
URI bio 220 exam 2 Questions and Correct
Answers/ Latest Update / Already Graded
What are the three main components of the skeletal system?
Ans: Bones, cartilage, and ligaments.
What is the primary function of bones?
Ans: Support, protection, movement, storage, and blood cell
production.
What type of cartilage is found in the nose and ears?
Ans: Hyaline cartilage.
What is the role of ligaments in the skeletal system?
Ans: Ligaments connect bone to bone and allow some
movement while preventing excessive movement.
What is the difference between spongy and compact bone?
Ans: Compact bone is dense and forms the outer layer, while
spongy bone is lighter and found inside bones, containing
trabeculae.
All rights reserved © 2025/ 2026 |
, Page |2
What are the two processes of bone development?
Ans: Intramembranous ossification and endochondral
ossification.
What is the function of osteoblasts?
Ans: Osteoblasts form bone by depositing calcium phosphate
crystals into the matrix.
What do osteocytes do?
Ans: Osteocytes maintain the bone matrix and are connected
at gap junctions.
What is the role of osteoclasts?
Ans: Osteoclasts resorb bone by breaking down the matrix
through exocytosis.
What is the extracellular matrix of bone tissue composed of?
Ans: 35% protein and 65% mineral content, including collagen
and proteoglycans.
All rights reserved © 2025/ 2026 |
, Page |3
What is the significance of the epiphyseal plate?
Ans: The epiphyseal plate is where bone growth occurs and
eventually closes between ages 12-25.
What is the medullary cavity?
Ans: The medullary cavity is the central cavity of bone where
blood cell formation occurs.
What are the structural differences between long bones and flat
bones?
Ans: Long bones have a diaphysis and epiphyses, while flat
bones are thin and often curved.
What are the types of cartilage growth?
Ans: Appositional growth (growth from the outside) and
interstitial growth (growth from within).
What is the function of the periosteum?
Ans: The periosteum is a connective tissue membrane that
covers the outer surface of bones and contains blood vessels
and nerves.
All rights reserved © 2025/ 2026 |
