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Human Skeletal System & Skull Anatomy

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Terms in this set (24)

  • What is the skeleton system?
    It is the body's framework made up of bones, joints, cartilage, and ligaments. It gives shape, support, and helps in movement.
  • How many bones are in an adult human skeleton?
    206 bones in adults.
  • What are the main parts of the skeleton system?
    Bones, joints, cartilage, and ligaments.
  • What are the functions of the skeleton system?
    Gives body shape and structure, protects vital organs, helps in movement with muscles, stores minerals (calcium, phosphorus), produces blood cells, and supports the body.
  • Name the four types of bones by shape.
    Long bones (e.g., femur), short bones (e.g., wrist), flat bones (e.g., skull, ribs), and irregular bones (e.g., vertebrae).
  • List the five types of joints.
    Ball & socket (shoulder, hip), hinge (elbow, knee), pivot (neck), saddle (thumb), and plane (wrist, ankle).
  • What are the major bones and their functions?
    Skull protects brain, rib cage protects heart & lungs, vertebral column protects spinal cord, pelvis supports upper body, femur is longest and strongest bone.
  • How many vertebrae are in the spine and how are they divided?
    33 vertebrae: 24 movable and 9 fused. Sections: cervical (7), thoracic (12), lumbar (5), sacral (5 fused), coccyx (3-5 fused).
  • What is the main function of ribs?
    Protect the heart and lungs and help in breathing.
  • What is the joint between skull bones called?
    Sutures, which are immovable joints.
  • Give examples of hinge and ball & socket joints.
    Hinge joints: elbow and knee. Ball & socket joints: shoulder and hip.
  • What does bone marrow produce?
    Bone marrow produces blood cells.
  • Which minerals are stored in bones?
    Bones store calcium and phosphorus for strength.
  • What is the longest bone in the human body?
    The femur.
  • How many bones make up the human skull?
    The human skull is made up of 22 bones.
  • What is the function of the parietal bone?
    Forms the upper side of the skull and protects the brain.
  • What is the coronal suture?
    The joint between the frontal and parietal bones.
  • What does the orbit house and protect?
    Houses the eyeball and protects the eye and its structures.
  • What is the zygomatic arch?
    Forms the cheek arch and is an attachment site for muscles.
  • What is the mastoid process?
    A bony projection that serves as a site for muscle attachment (e.g., sternocleidomastoid).
  • What is the mandible and its significance?
    Forms the lower jaw, holds lower teeth, and is the only movable bone of the skull.
  • What is the mental foramen?
    An opening for nerves and blood vessels in the mandible.
  • What is the function of molars and premolars?
    Help in chewing and grinding food.
  • When does bone growth typically stop?
    Bone growth stops in the late teens to early 20s.