#1
What is the main function of the skeletal system?
Movement
ExplanationSupports and facilitates body movement.
#2
What is the process of bone formation called?
Ossification
ExplanationOssification is the development and hardening of bone tissue.
#3
What is the anatomical name for the thigh bone?
Femur
ExplanationThe femur is the long bone of the thigh.
#4
Which bones make up the forearm?
Radius and ulna
ExplanationThe radius and ulna are the forearm bones supporting wrist and hand movement.
#5
What is the primary mineral component of bone tissue?
Calcium
ExplanationCalcium is a crucial mineral for the strength and hardness of bones.
#6
Which bone is commonly known as the shoulder blade?
Scapula
ExplanationThe scapula is the flat triangular bone in the shoulder.
#7
Which type of bone cells are responsible for bone resorption?
Osteoclasts
ExplanationOsteoclasts break down bone tissue for remodeling and calcium regulation.
#8
What is the medical term for the collarbone?
Clavicle
ExplanationThe clavicle is the bone connecting the shoulder and chest.
#9
Which type of joint allows for the greatest range of motion?
Ball-and-socket joint
ExplanationBall-and-socket joints provide a wide range of rotational movement.
#10
Which of the following is not a component of the axial skeleton?
Pelvic girdle
ExplanationThe pelvic girdle is part of the appendicular skeleton.
#11
Which type of joint is found between the carpal bones of the wrist?
Gliding joint
ExplanationGliding joints allow sliding movements between adjacent bones.
#12
What is the purpose of the periosteum?
To nourish and protect bones
ExplanationThe periosteum supplies nutrients and safeguards bone integrity.
#13
Which part of a long bone contains the compact bone tissue?
Diaphysis
ExplanationThe diaphysis houses dense and rigid compact bone tissue.
#14
What is the anatomical name for the heel bone?
Calcaneus
ExplanationThe calcaneus is the bone forming the heel of the foot.
#15
What is the function of the fontanelles in a baby's skull?
To allow for skull expansion during childbirth
ExplanationFontanelles enable flexibility for the baby's head during birth.
#16
Which of the following is a sesamoid bone?
Patella
ExplanationThe patella, or kneecap, is a sesamoid bone in the knee joint.
#17
Which bone is responsible for supporting the tongue and providing attachment for neck muscles?
Hyoid bone
ExplanationThe hyoid bone supports the tongue and anchors neck muscles, playing a role in speech and swallowing.
#18
Which hormone plays a key role in regulating calcium levels in the blood?
Parathyroid hormone (PTH)
ExplanationPTH helps maintain calcium balance by stimulating bone resorption.
#19
What is the function of the yellow bone marrow?
Fat storage
ExplanationYellow bone marrow stores fat and serves as an energy reserve.
#20
In which part of a long bone would you find the epiphyseal plate?
Metaphysis
ExplanationThe epiphyseal plate is in the metaphysis, supporting bone growth.
#21
What is the primary function of red bone marrow?
Blood cell formation
ExplanationRed bone marrow produces blood cells through hematopoiesis.
#22
What is the function of the synovial fluid in joints?
To lubricate and nourish the joint
ExplanationSynovial fluid reduces friction and provides nutrients to joints.
#23
In which bone marrow type is hematopoiesis more active?
Red bone marrow
ExplanationHematopoiesis, or blood cell formation, is more active in red bone marrow.
#24
Which hormone is responsible for inhibiting bone resorption?
Calcitonin
ExplanationCalcitonin regulates calcium levels by inhibiting bone breakdown.
#25
What is the primary function of the articular cartilage in joints?
To reduce friction and absorb shock
ExplanationArticular cartilage cushions joints, minimizing friction and absorbing impact.