#1
Which bone is commonly known as the collarbone?
Clavicle
ExplanationIt forms part of the shoulder girdle and provides support to the arm.
#2
What is the function of the skeletal system?
Support and protection
ExplanationIt provides structural support, protects vital organs, and allows movement.
#3
Which bone is the longest bone in the human body?
Femur
ExplanationThe femur, or thigh bone, is the longest and strongest bone, crucial for locomotion and weight-bearing.
#4
What is the function of red bone marrow?
Production of red blood cells
ExplanationRed bone marrow is responsible for hematopoiesis, producing red blood cells, white blood cells, and platelets.
#5
Which bone forms the prominent point of the shoulder?
Scapula
ExplanationThe scapula, or shoulder blade, forms the posterior part of the shoulder girdle, providing attachment for muscles.
#6
Which bone is not part of the axial skeleton?
Femur
ExplanationIt's a long bone in the thigh, part of the appendicular skeleton.
#7
What is the clinical significance of the sphenoid bone?
It houses the pituitary gland
ExplanationIt's a crucial bone in the skull, housing the pituitary gland which regulates several hormonal functions.
#8
Which bone articulates with the acetabulum to form the hip joint?
Femur
ExplanationThe femur articulates with the acetabulum of the pelvis, forming the hip joint.
#9
What is the clinical significance of the patella?
It increases leverage during knee extension
ExplanationThe patella, or kneecap, protects the knee joint and enhances the leverage of the quadriceps muscles.
#10
Which bone articulates with the ulna and humerus to form the elbow joint?
Radius
ExplanationThe radius articulates with the ulna and humerus, contributing to the flexibility and movement of the elbow joint.
#11
What is the condition characterized by the softening and weakening of bones due to a lack of vitamin D?
Rickets
ExplanationRickets leads to bone deformities and weakness, primarily caused by vitamin D deficiency.
#12
Which disorder is characterized by abnormal curvature of the spine in the frontal plane?
Scoliosis
ExplanationScoliosis is a condition where the spine curves sideways, leading to postural problems and potential complications.
#13
Which joint is classified as a pivot joint?
Atlas-axis joint
ExplanationThe atlas-axis joint allows rotation of the head, crucial for movements like nodding and shaking.
#14
Which joint is classified as a condyloid joint?
Wrist joint
ExplanationThe wrist joint is classified as a condyloid joint, allowing movement in multiple directions.
#15
Which joint is classified as a saddle joint?
Thumb joint
ExplanationThe thumb joint is a saddle joint, allowing a wide range of movement, including rotation and opposition.