Questions and Answers
Red bone marrow functions in the formation of ____________.
red blood cells, white blood cells, and platelets.
The presence of an epiphyseal plate indicates that ______________.
the bone is lengthening
A bone lengthens as a result of __________.
increased activity within the epiphyseal plate
What are osteoclasts?
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What cell found in bone functions to deposit bony matrix?
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Articular cartilage is __________.
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At what age are nearly all bones completely ossified?
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The calcaneus bone of the foot is an example of __________.
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Which of the following is NOT associated with spongy bone?
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What happens when the epiphyseal plate is ossified?
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Compact bone has ___________ and spongy bone has ____________.
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Which of the following bone shapes is stated with the wrong example?
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Based on their shape, the bones of the cranium can be classified as what type of bone?
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What describes a female's pelvis compared to a male's pelvis?
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The osteocytes in compact bone are arranged within cylinder-shaped units called ____________.
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Osteoblasts are ________________, whereas osteocytes are ____________________.
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The zygomatic bone is an example of a(n) _________________.
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Which of the following does NOT describe the functions of the skeletal system?
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The axial skeleton includes __________.
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Which of the following are not components of the pelvic girdle?
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Exercise ___________ and _____________ bones.
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What is an organ that is protected by bones of the axial skeleton?
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What vitamin is necessary for proper absorption of calcium in the small intestines?
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The femur is __________.
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Which of the following is(are) an example of an intramembranous bone?
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Study Notes
Bone Marrow and Blood Cells
- Red bone marrow is responsible for the formation of red blood cells, white blood cells, and platelets.
Bone Growth
- The presence of an epiphyseal plate indicates ongoing bone lengthening.
- Increased activity within the epiphyseal plate leads to bone lengthening.
Bone Cells
- Osteoclasts are cells that break down bone matrix, playing a crucial role in bone resorption.
- Osteoblasts are bone-forming cells essential for the deposition of bony matrix and growth of bone tissue.
- Osteocytes are mature bone cells found within bone tissue, located in structures called osteons.
Bone Structure
- Articular cartilage is a type of hyaline cartilage that covers joint surfaces.
- Compact bone consists of osteons, while spongy bone contains trabeculae.
Ossification and Bone Shape
- Nearly all bones are completely ossified by the age of 25 years.
- The calcaneus bone is classified as a short bone.
Spongy vs. Compact Bone
- Osteons are associated with compact bone, whereas trabeculae are unique to spongy bone. Osteons are not found in spongy bone.
Bone Classification
- Bones of the cranium can be classified as flat bones.
- The zygomatic bone is noted as an irregular bone.
Pelvis Structure
- Female pelvis is characterized by a wider cavity and lighter bones compared to the male pelvis.
Skeletal System Functions
- The skeletal system protects vital organs, stores inorganic salts, and interacts with muscles for movement, but does not generate limb movements.
Axial Skeleton
- The axial skeleton comprises the skull, hyoid bone, thoracic cage, and vertebral column.
Pelvic Girdle Components
- The pelvic girdle consists of hip bones (coxal bones) and the sacrum but does not include the femur.
Effects of Exercise
- Regular exercise thickens and strengthens bones, contributing to overall skeletal health.
Nutritional Aspects
- Vitamin D is essential for proper calcium absorption in the small intestines, crucial for bone health.
Longest Bone
- The femur is recognized as the longest bone in the human body.
Intramembranous Bones
- Broad, flat bones of the skull are categorized as intramembranous bones, formed directly from mesenchymal tissue.
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Description
Test your knowledge of the human skeleton with this A&P Quiz 8 focused on key functions and components such as red bone marrow, osteoclasts, and bone lengthening. Perfect for students studying anatomy and physiology.