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Questions and Answers
Which bone is located laterally to the tibia in the lower limb?
Which bone is located laterally to the tibia in the lower limb?
What is the primary function of the skeletal system?
What is the primary function of the skeletal system?
Which of the following tarsal bones is commonly referred to as the heel bone?
Which of the following tarsal bones is commonly referred to as the heel bone?
Which of the following bones articulates at the knee joint?
Which of the following bones articulates at the knee joint?
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Which structure primarily connects the tibia and fibula at their distal ends?
Which structure primarily connects the tibia and fibula at their distal ends?
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Which bones make up the lower limb skeleton?
Which bones make up the lower limb skeleton?
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What is the primary function of ligaments within the skeletal system?
What is the primary function of ligaments within the skeletal system?
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Which skeletal function is directly involved in protecting organs such as the brain and spinal cord?
Which skeletal function is directly involved in protecting organs such as the brain and spinal cord?
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Which of the following best describes flat bones?
Which of the following best describes flat bones?
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What type of bone is primarily found at the ends of long bones?
What type of bone is primarily found at the ends of long bones?
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What classification of bone does the femur belong to?
What classification of bone does the femur belong to?
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What is the primary role of compact bone in the skeletal system?
What is the primary role of compact bone in the skeletal system?
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Which of the following statements about tarsal bones is true?
Which of the following statements about tarsal bones is true?
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Which of the following bones is part of the lower limb?
Which of the following bones is part of the lower limb?
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What is the primary function of the skeletal system?
What is the primary function of the skeletal system?
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Which of the following joints is directly articulated by the tibia?
Which of the following joints is directly articulated by the tibia?
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Which tarsal bone is located at the heel of the foot?
Which tarsal bone is located at the heel of the foot?
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How many bones make up the appendicular skeleton?
How many bones make up the appendicular skeleton?
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Which of the following is NOT a function of the tibia?
Which of the following is NOT a function of the tibia?
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Which pair of bones comprises the bones of the lower leg?
Which pair of bones comprises the bones of the lower leg?
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What articulates with the talus bone in the foot?
What articulates with the talus bone in the foot?
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Study Notes
Skeletal System Components
- The skeletal system is composed of bones, joints, cartilages, and ligaments.
- It is divided into two main subdivisions: the axial skeleton and the appendicular skeleton.
Functions of Bones
- Provide support to the body
- Protect vital organs like the brain, spinal cord, and thoracic cavity organs.
- Allow movement through attached skeletal muscles.
- Store minerals like calcium and phosphorus as well as fat in the internal marrow cavity.
- Produce blood cells (hematopoiesis)
Bone Classification
- The adult skeleton consists of 206 bones.
- Composed of two types of tissues:
- Compact bone: Dense, smooth, and homogeneous.
- Spongy bone: Contains small needlelike pieces of bone with many open spaces.
Bone Shapes
- Long bones are longer than they are wide and have a shaft with enlarged ends.
- They contain mostly compact bone with spongy bone at the ends.
- Examples include the femur and humerus.
- Flat bones are thin, flattened, and usually curved.
- These bones have two thin layers of compact bone sandwiching a layer of spongy bone.
- Examples include most bones of the skull, ribs, and sternum.
- Short bones are cube-shaped and contain mostly spongy bone.
- Examples include the bones of the wrist and ankles
- Irregular bones have complex shapes and do not fit into the other categories.
- Examples include vertebrae and the hip bones.
Appendicular Skeleton
- Contains 126 bones and includes the limbs, pectoral girdle, and pelvic girdle.
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Description
Explore the fundamental aspects of the skeletal system, including its components, functions, and classification of bones. This quiz will help you understand the differences between axial and appendicular skeletons and the various types and shapes of bones in the adult human body.
