Human Anatomy 260 CH 6. HW terms

How many thoracic vertebrae are found in the human body?

12

How many bones are in the human skeleton?

206

How many bones comprise the skull?

22

How many fused components make up the sacrum?

5

How many lumbar vertebrae are found in the human body?

5

Which part of the rib indicates the site where the tubular body, or shaft, begins curving toward the sternum?

Angle

What structure uses this passageway to enter the skull?

Internal carotid artery

Which of the following describes the vertebral body of the lumbar vertebrae? -Facets for rib articulations -Medium-sized, heart-shaped, flat faces -Small, oval, curved faces -Massive, oval, flat faces

Massive, oval, flat faces

Which fontanel is located at the junctions between the squamous suture and lambdoid suture?

Mastoid fontanel

The __________ vertebrae support the skull, stabilize relative positions of brain and spinal cord, and allow controlled head movement.

cervical

Ribs 11 and 12 are specifically called __________ ribs.

floating

The thoracic cage consists of __________.

thoracic vertebrae sternum rib cage

Which of the following structures contains openings that allow passage of the branches of the olfactory nerve through the ethmoid bone?

Cribriform plate

Rib pairs 2-7 attach to which part of the sternum?

Body

Which of the following are continually remodeled and reshaped, and change throughout your lifetime?

Bones

Which vertebra is referred to as the axis?

C2

Which vertebral region permits a relatively greater degree of flexibility, through the interlocking vertebral bodies, than do other regions?

C3-C7

Which of the following statements regarding vertebral regions is correct? -The twelve thoracic vertebrae form the mid-back region, and each vertebra articulates with two pairs of ribs. -During development, the sacrum originates as a group of five vertebrae, whereas the coccyx begins as three to five very small vertebrae. -Five lumbar vertebrae form the lower back, and the fifth articulates with the coccyx. -All of the listed responses are correct.

During development, the sacrum originates as a group of five vertebrae, whereas the coccyx begins as three to five very small vertebrae.

Which of the following is NOT part of the vertebral column?

Hip bones

Which of the following bones is not in contact with any other bones of the skeleton?

Hyoid bone

Where is the supra-orbital foramen located?

In the frontal bone

Which of the following statements about the lambdoid suture is FALSE?

It separates the occipital bone from the temporal bones.

Which vertebral column disorder involves an exaggerated thoracic curve, resulting in a round-back appearance?

Kyphosis

Compression fractures or compression-dislocation fractures, that occur after a hard fall, most often involve which vertebrae?

L1-L2 and T12

Which of the following bones is the smallest bone of the skull, and contains a groove that aids in tear drainage?

Lacrimal bones

When a person stands holding a heavy object, which spinal curve is exaggerated to prevent toppling forward?

Lumbar

Which spinal curve changes during the last three months of pregnancy?

Lumbar curve

Which of the following statements regarding lumbar vertebrae is FALSE? -The transverse processes of lumbar vertebrae are short, and they have no articular facets or transverse foramina. -Lumbar vertebrae have the largest of the vertebral foramina among the vertebral regions. -Lumbar vertebrae have blunt spinous processes with broad tips that point posteriorly. -Lumbar vertebrae have massive, oval, flat faces on the vertebral bodies.

Lumbar vertebrae have the largest of the vertebral foramina among the vertebral regions.

Which of the following bones is not part of the orbital complex?

Nasal bone

Which of the following structures on the occipital bone allows the skull to articulate with the first cervical vertebra?

Occipital condyles

What structure protects the pituitary gland?

Sella turcica

Which cranial bone articulates with every other cranial bone, extends from one side to the other across the floor of the cranium, and acts as a bridge, connecting cranial and facial bones?

Sphenoid

Which bone of the axial skeleton is shaped like a bat with its wings extended?

Sphenoid bone

Which of the following is not part of the temporal bone?

Temporal process

Which portion of ribs 1-10 contacts the transverse process of a thoracic vertebra?

The inferior portion of the tubercle, via an articular facet

Which of the following statements is not true of the paranasal sinuses?

The mucous secretions are released into the pharynx and oral cavity.

Which of the following statements about the sternum is FALSE? -All of the listed responses are true. -The muscular diaphragm and the external oblique muscles plus the rectus abdominis attach to the xiphoid process. -The tongue-shaped body has individual costal cartilages for rib pairs 2-7. -The jugular notch is the shallow indentation on the superior surface of the manubrium, located between the clavicular articulations.

The muscular diaphragm and the external oblique muscles plus the rectus abdominis attach to the xiphoid process.

Which of the following statements BEST describes the differences between the skulls of infants and adults?

The skulls differ in terms of shape and structure of cranial elements.

Which vertebral processes project laterally or dorsolaterally and are sites of muscle attachments, as well as sites of rib articulation in the thoracic area?

Transverse processes

Which vertebral structure transfers weight along the axis of the vertebral column?

Vertebral body