BIOL251 Human Anatomy & Physiology I – Module
4 Exam Review 150 Multiple-Choice Questions with
Answers & Explanations
Topic: Skeletal System, Bone Tissue, Axial & Appendicular Skeleton, Joints
Question 1
Which of the following is a function of the skeletal system?
A) Vitamin D synthesis
B) Hematopoiesis
C) Thermoregulation
D) Detoxification of blood
Answer: B
Explanation: Hematopoiesis (blood cell formation) occurs in red bone marrow.
Question 2
The shaft of a long bone is called the:
A) Epiphysis
B) Metaphysis
C) Diaphysis
D) Periosteum
Answer: C
Question 3
Which bone cell type is responsible for bone resorption?
A) Osteoblast
B) Osteocyte
C) Osteoclast
D) Osteoprogenitor
Answer: C
Explanation: Osteoclasts break down bone matrix. Osteoblasts build bone.
,Question 4
The structural unit of compact bone is the:
A) Trabecula
B) Lacuna
C) Osteon (Haversian system)
D) Canaliculus
Answer: C
Question 5
Intramembranous ossification:
A) Forms long bones
B) Uses hyaline cartilage model
C) Forms flat bones of the skull
D) Requires secondary ossification centers
Answer: C
Explanation: Intramembranous ossification forms flat bones directly from mesenchymal tissue.
Question 6
The epiphyseal plate is responsible for:
A) Increase in bone width
B) Increase in bone length
C) Bone repair
D) Mineral storage
Answer: B
Question 7
Which vitamin deficiency causes rickets in children?
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin K
Answer: C
,Question 8
The foramen magnum is found in which bone?
A) Frontal
B) Temporal
C) Occipital
D) Sphenoid
Answer: C
Question 9
Which suture separates the parietal bones from the frontal bone?
A) Sagittal suture
B) Coronal suture
C) Lambdoid suture
D) Squamous suture
Answer: B
Question 10
The sella turcica is part of which bone?
A) Ethmoid
B) Sphenoid
C) Temporal
D) Maxilla
Answer: B
Explanation: Sella turcica houses the pituitary gland.
Question 11
The mastoid process is a feature of the:
A) Occipital bone
B) Sphenoid bone
C) Temporal bone
D) Parietal bone
Answer: C
, Question 12
Which bone does NOT belong to the axial skeleton?
A) Sternum
B) Ribs
C) Scapula
D) Vertebrae
Answer: C
Explanation: Scapula is part of the appendicular skeleton (pectoral girdle).
Question 13
How many cervical vertebrae are in the human spine?
A) 5
B) 7
C) 12
D) 5 fused
Answer: B
Question 14
The dens (odontoid process) is found on which vertebra?
A) Atlas (C1)
B) Axis (C2)
C) C7
D) L5
Answer: B
Explanation: The dens allows rotation of the atlas.
Question 15
Which part of the sternum articulates with the clavicles?
A) Body
B) Xiphoid process
C) Manubrium
D) Costal cartilage
4 Exam Review 150 Multiple-Choice Questions with
Answers & Explanations
Topic: Skeletal System, Bone Tissue, Axial & Appendicular Skeleton, Joints
Question 1
Which of the following is a function of the skeletal system?
A) Vitamin D synthesis
B) Hematopoiesis
C) Thermoregulation
D) Detoxification of blood
Answer: B
Explanation: Hematopoiesis (blood cell formation) occurs in red bone marrow.
Question 2
The shaft of a long bone is called the:
A) Epiphysis
B) Metaphysis
C) Diaphysis
D) Periosteum
Answer: C
Question 3
Which bone cell type is responsible for bone resorption?
A) Osteoblast
B) Osteocyte
C) Osteoclast
D) Osteoprogenitor
Answer: C
Explanation: Osteoclasts break down bone matrix. Osteoblasts build bone.
,Question 4
The structural unit of compact bone is the:
A) Trabecula
B) Lacuna
C) Osteon (Haversian system)
D) Canaliculus
Answer: C
Question 5
Intramembranous ossification:
A) Forms long bones
B) Uses hyaline cartilage model
C) Forms flat bones of the skull
D) Requires secondary ossification centers
Answer: C
Explanation: Intramembranous ossification forms flat bones directly from mesenchymal tissue.
Question 6
The epiphyseal plate is responsible for:
A) Increase in bone width
B) Increase in bone length
C) Bone repair
D) Mineral storage
Answer: B
Question 7
Which vitamin deficiency causes rickets in children?
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin K
Answer: C
,Question 8
The foramen magnum is found in which bone?
A) Frontal
B) Temporal
C) Occipital
D) Sphenoid
Answer: C
Question 9
Which suture separates the parietal bones from the frontal bone?
A) Sagittal suture
B) Coronal suture
C) Lambdoid suture
D) Squamous suture
Answer: B
Question 10
The sella turcica is part of which bone?
A) Ethmoid
B) Sphenoid
C) Temporal
D) Maxilla
Answer: B
Explanation: Sella turcica houses the pituitary gland.
Question 11
The mastoid process is a feature of the:
A) Occipital bone
B) Sphenoid bone
C) Temporal bone
D) Parietal bone
Answer: C
, Question 12
Which bone does NOT belong to the axial skeleton?
A) Sternum
B) Ribs
C) Scapula
D) Vertebrae
Answer: C
Explanation: Scapula is part of the appendicular skeleton (pectoral girdle).
Question 13
How many cervical vertebrae are in the human spine?
A) 5
B) 7
C) 12
D) 5 fused
Answer: B
Question 14
The dens (odontoid process) is found on which vertebra?
A) Atlas (C1)
B) Axis (C2)
C) C7
D) L5
Answer: B
Explanation: The dens allows rotation of the atlas.
Question 15
Which part of the sternum articulates with the clavicles?
A) Body
B) Xiphoid process
C) Manubrium
D) Costal cartilage
