Free Human Skeleton MCQs with Answers
138 Human Skeleton MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The human skeleton provides support, protects organs, enables movement with muscles and stores minerals while bone marrow produces blood cells. Questions cover the axial and appendicular skeleton, types of bones and joints, cartilage, ligaments and tendons, and the difference between fixed, slightly movable and freely movable joints.
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138 questions · page 7 of 7
- A. Haversian canal
- B. Periosteum
- C. Marrow
- D. Joint
Explanation: The correct answer is the Haversian canal. These canals are part of the microscopic structure of compact bone and facilitate the…
Correct answer: Haversian canal- A. Red
- B. Yellow
- C. Orange
- D. Both (A) and (B)
Explanation: Bone marrow is the soft tissue inside bones. There are two types: red bone marrow, which is involved in blood cell production, and yellow…
Correct answer: Both (A) and (B)- A. Collagenous fibers
- B. Blood vessels
- C. Perichondrium
- D. Matrix
Explanation: The correct answer is the 'Matrix.' The matrix is essential for the regeneration of cartilage as it provides a scaffold for cellular…
Correct answer: Matrix- A. Calcification
- B. Chondrification
- C. Decalcification
- D. Ossification
Explanation: Ossification is the correct term for the process of bone formation, also known as osteogenesis.
Correct answer: Ossification- A. Perichondrium
- B. Prostomium
- C. Perimycium
- D. Periosteum
Explanation: The correct answer is periosteum. The periosteum is a dense fibrous membrane covering the surface of bones.
Correct answer: Periosteum- A. Osteoclast
- B. Osteoblasts
- C. Osteocytes
- D. Fibroblast
Explanation: Osteoclasts are the bone-dissolving cells responsible for bone resorption.
Correct answer: Osteoclast- A. 30-40
- B. 30-35
- C. 40-45
- D. 50-60
Explanation: Osteopenia is a clinical term used to describe a decrease in bone mineral density (BMD) below normal reference values.
Correct answer: 50-60- A. Chondrocytes
- B. Osteocytes
- C. Osteoblasts
- D. Osteoclasts
Explanation: Cartilage, a type of connective tissue, contains specialized cells known as chondrocytes.
Correct answer: Chondrocytes- A. Maxilla
- B. Frontal bone
- C. Mandible
- D. Zygomatic
Explanation: The correct answer is the mandible. It is the only bone in the skull that moves, allowing for the opening and closing of the mouth, which…
Correct answer: Mandible- A. Cartilage
- B. Bone
- C. Muscles
- D. All of the above
Explanation: In animals, support is provided by a combination of cartilage, bones, and muscles.
Correct answer: All of the above- A. Osteoblasts
- B. Osteocytes
- C. Osteoclast
- D. Chondocytes
Explanation: In bones, there are different types of cells involved in bone formation and maintenance.
Correct answer: Osteocytes- A. No blood circulation
- B. mostly contain type li collagen
- C. They can be shaped
- D. No inorganic salts
Explanation: Cartilage does contain inorganic salts, particularly calcium salts, which contribute to its hardness and rigidity.
Correct answer: No inorganic salts- A. Maxilla
- B. Lacrimal
- C. Mandible
- D. Palatine
Explanation: The mandible is the correct answer. It is the only unpaired facial bone and forms the lower jaw
Correct answer: Mandible- A. Calcium carbonate
- B. Calcium phosphate
- C. Potassium hydroxide
- D. Calcium chloride
Explanation: The major inorganic component of vertebrate bone is hydroxyapatite, which is a crystalline structure made primarily of calcium phosphate.
Correct answer: Calcium phosphate- A. Long bones
- B. Appendicular skeleton
- C. Trabeculae
- D. Axial Skeleton
Explanation: The bones in the long axis of the body, which include the skull, vertebral column, and ribcage, collectively make up the axial skeleton.
Correct answer: Axial Skeleton- A. Sternum
- B. Clavicle
- C. Pelvic bone
- D. Hyoid bone
Explanation: The pectoral girdle, also known as the shoulder girdle, is the set of bones that connect the upper limbs (arms) to the axial skeleton.
Correct answer: Clavicle- A. Myocardium
- B. Cartilage
- C. Bone
- D. Periosteum
Explanation: Option B is correct. The connective tissue that consists of cells known as chondrocytes is cartilage.
Correct answer: Cartilage- A. Calcified
- B. Elastic
- C. Fibrous
- D. Hyaline
Explanation: At the beginning of the menstrual phase, the levels of ovarian hormones, specifically estrogen and progesterone, are at their lowest.
Correct answer: Hyaline