Ch. 6: The Skeletal System Axial Division

The first cervical vertebra is the axis. a. True b. False

b. False (atlas)

Which of the following organs is protected by the rib cage? a. heart b. lungs c. thymus d. All of the answers are correct. e. None of the answers are correct.

d. All of the above

The last two pairs of ribs in the rib cage are called floating ribs. What does that term mean? a. The ribs do not have any attachment to the sternum. b. The ribs can be dislocated easily because they can float around the rib cage area. c. The bones do not attach to any bones at all. They float in the body, suspended in muscle. d. Because people have these bones, they can more easily float in water.

a. The ribs do not have any attachment to the sternum.

A point of contact between the axial and appendicular skeletons is the manubrium. a. True b. False

a. True

The true ribs ________. a. attach to the sternum by separate cartilaginous extensions b. attach directly to the body of the sternum by bone to bone contact c. are the only ribs that are unpaired d. consist of twelve pairs e. attach only to the vertebral column

a. attach to the sternum by separate cartilaginous extensions

Which of the following structures passes through the foramen magnum? a. spinal cord b. internal jugular veins c. internal carotid arteries d. optic nerves

a. spinal cord

Which of the following structures can most easily be felt on the dorsum? a. spinous process b. transverse process c. pedicle d. vertebral body e. intervertebral disc

a. spinous process

Ribs 1-10 articulate with the bodies of the thoracic vertebrae and facets on (the) ________. a. transverse processes of the thoracic vertebrae b. spinous processes of the lumbar vertebrae c. xiphoid process of the sternum d. spinous processes of the thoracic vertebrae e. None of the answers are correct.

a. transverse processes of the thoracic vertebrae

David and Margie are amazed when they can see a pulsing movement in the top of their newborn baby's skull. What structure of the skull are they seeing when they observe this movement? a. lambdoid suture b. anterior fontanel c. parietal bone d. posterior fontanel

b. anterior fontanel

If you are feeling pain in your lower back, you are experiencing pain in the __________ region of the vertebral column. a. cervical b. lumbar c. thoracic d. sacral

b. lumbar

Which of the following bones is NOT part of the axial skeleton? a. temporal bone b. sternum c. clavicle d. coccyx

c. clavicle

Which bone is not in direct contact with any other bone of the skeleton? a. ethmoid b. sphenoid c. hyoid d. zygomatic e. palatine

c. hyoid

The major function of the vertebral body is to ________. a. protect the spinal cord b. allow twisting motions c. transfer weight along the axis of the vertebral column d. provide support e. provide a passageway for nerves

c. transfer weight along the axis of the vertebral column

Fontanels on an infant's head ________. a. are areas of fibrous connective tissue b. allow the skull to be distorted without damage c. occur where the cranial bones have not yet fused d. All of the answers are correct. e. None of the answers are correct.

d. All of the answers are correct.

In what ways does the skull of an infant differ from that of an adult? a. The cranium of an infant is larger in proportion to the body than that of an adult. b. Infants have fibrous fontanels that allow the skull to pass through the birth canal without damaging the brain, whereas adults do not have fontanels. c. Infants have many more bones that later fuse together to make the 29 bones of the skull. d. All of the listed responses are correct.

d. All of the listed responses are correct.

Which of the following is a function of the axial skeleton? a. to stabilize the lower limbs for standing b. to conduct respiratory inspirations c. to hold the head upright d. All of these are functions of the axial skeleton.

d. All of these are functions of the axial skeleton.

Shelly has been taking a CPR class and has been warned not to break the xiphoid process when resuscitating an individual. Where is the xiphoid process? a. It is found at the superior end of the sternum. b. It is attached to the clavicles, or collarbones. c. It is a part of the last pair of ribs. d. It is the most inferior part of the sternum.

d. It is the most inferior part of the sternum.

The divisions of the skeletal system include (the) ________. a. cranial, caudal, and anterior b. dorsal and ventral c. proximal and distal d. axial and appendicular e. None of the answers are correct.

d. axial and appendicular

Bones of the axial skeleton form the ________ axis of the body. a. horizontal b. diagonal c. coronal d. longitudinal e. transverse

d. longitudinal

The axial skeleton functions in ________. a. housing special sense organs for taste, smell, hearing, balance, and sight b. forming a framework that supports and protects organs in the ventral body cavities c. the production of blood cells by the red marrow found in d. portions of the vertebrae, sternum, and ribs d. providing an extensive surface for the attachment of muscles that adjust the positions of the head, neck, and trunk e. All of the answers are correct.

e. All of the answers are correct.