A&P test 2 chapter chapter 7

Which of the following pairs is correctly matched?

lumbar vertebrae; short, flat spinous processes

The superior orbital fissure is formed in the sphenoid bone, whereas the inferior orbital fissure is formed between the sphenoid and ________.

maxilla

The pelvic outlet is _______ in a male than in a female. The female pelvis is modified for childbearing: it is wider, shallower, and lighter than the male pelvis.

narrower

Manubrium -

superior portion of the sternum

Which of the following is a bony articulation for the scapula?

the acromion forms a joint with the clavicle.

Which of the following is NOT a facial bone?

the sphenoid bone is a cranial bone

When looking at the range of motion of the various sections of the vertebral column the ________ has the most flexibility.

Cervical spine

Identify the suture found between the 2 parietal bones.

Sagittal suture

Which of the following can be considered a function of the paranasal sinuses?

Sinuses take away a minimal amount of strength from bones while reducing the weight of bones.

how many bones make up the adult skull?

22

_____ pairs of ribs are false ribs. False ribs either attach to the sternum indirectly by articulating with the costal cartilage of the rib above it, or do not attach to the sternum at all.

5

There are ___ pairs of true ribs in the human body. True ribs articulate directly with the sternum.

7

How many lumbar vertebrae are there in a typical adult skeleton?

A typical adult skeleton has 5 lumbar vertebrae, 12 thoracic vertebrae, and 7 cervical vertebrae

What is the name of the first cervical vertebra?

Atlas

Thoracic vertebrae differ from the other vertebrae in that they have ________.

Costal facets

The superior nasal concha is a part of which bone?

Ethmoid

Which is the largest, longest, and strongest bone in the body?

Femur

Which bone forms the anterior cranium?

Frontal bone

The proximal end of the ulna illustrates the relationship of form and function. The rounded trochlear notch articulates with the hourglass shape of the trochlea. This forms a joint that allows for ________.

Hinge like motion of the forearm

Why is the rib at B considered a true rib?

It passes from the vertebral column to the sternum via its own costal cartilage

Which vertebrae would you expect to have the largest body, relative to the other regions?

Lumbar

Identify the bone(s) that form(s) the majority of the hard palate and a keystone bone of the face.

Maxilla. These bones, along with the palatine bones, form the hard palate

Which facial bones makeup the central portion of the bridge of the nose?

Nasal

Which of the following bones do not contain a sinus?

Nasal. The sinuses found in the skull are collectively known as the paranasal sinuses because they encircle the nasal cavity. The nasal bones are small tombstone shaped bones that form the bridge of the nose and don't contain sinuses.

A fracture of which structure is commonly referred to as "breaking your hip"?

Neck of the femur

Identify the region of the skull that articulates with the atlas.

Occipital Condyles

Identify the articulation site that allows us to nod our head "yes".

Occipital bone- atlas

Which facial bones form the roof of the mouth?

Palatine and maxillary bones

Which is the best description for the function of the cranial bones?

Protect the brain

The antebrachium is composed of which of the following two bones?

Radius and ulna

The suture that is found where a parietal and temporal bone meet on the lateral aspect of the skull is ________.

Squamous

Which of the following bones is not a facial bone? .

The ethmoid bone forms the area of the cranium between the nasal cavity and the orbits

Only one component bone of the right coxal bone articulates with this same bone component on the other side of the body. Which of the following bone components fits this description?

The right pubis articulates with the left pubis via a fibrocartilage joint called the pubic symphysis.

The proximal end of the radius illustrates the relationship of form and function. The cup-like surface of the radial head articulates with the rounded shape of the capitulum. This forms a joint that allows for ________.

The rotational motion of the forearm

Which cranial bone spans the width of the cranial floor?

The sphenoid bone is the large bat shaped bone that spans the floor of the skull.

Which of the following bones is NOT part of the orbit?

The temporal bone is lateral and too far posterior to contribute to the orbit.

Identify the region of a rib that articulates with the transverse process of a vertebra.

The tubercle of a rib is located between the neck and shaft of the rib at the proximal end of the bone. It contacts the transverse process at the transverse costal facet.

The vomer and ethmoid bones form the bony parts of the nasal septum.

The vomer forms the inferior portion of the septum. The perpendicular plate of the ethmoid bone forms the superior portion of the septum.

What bone forms part of the nasal septum?

The vomer is a thin bone in the nasal cavity forming part of the nasal septum.

To what region of the vertebral column does this vertebra belong?

Thoracic vertebrae can be identified by the facets on the transverse process and the facets or demifacets on the body used to articulate with ribs.

Which forearm bone(s) contribute(s) most to the structure of the elbow joint?

Ulna

The bones of the skull including facial bones are part of the

axial skeleton

The lumbar vertebrae have large, flattened spinous processes as a result of

being attached to the large muscles in the back.

Humerus-

bone of the upper arm

Thoracic vertebrae have

circular vertebral foramen.

Curvatures of the spine serve the body by ________.

giving additional springiness and flexibility to the spine which absorbs shock

The ________ is located along the posterior border of the ilium between the posterior inferior iliac spine and the ischial spine.

greater sciatic notch

The _______ is the most proximal bone in the lower appendicular skeleton.

ilium

illiac fossa is also known as

ilium

The hyoid bone is unique because it ________.

is the only bone of the body that does not articulate with any other bone

Atlas = .

lacks both a body and spinous process

Mandible forms the

lower jaw and contains half of your teeth.

What is the major function of the axial skeleton?

provide central support for the body and protect internal organs

The ________ is the lateral bone in the forearm.

radius

Axial skeleton =

skull, vertebral column, and rib cage

Cheekbone =

zygomatic bone

Identify the articulation site that allows us to rotate our head, e.g. shaking the head "no".

Atlas - axis

What is the name of the second cervical vertebra? .

Axis which is known as C2

The bones in the skull have many different names but what are the boundaries of each bone? Where do they start and stop?

Bones of the skull are separated by immobile joints called sutures.

Which of the following is NOT a movement that can occur between vertebrae?

Supination

Identify the part of a rib that articulates in the demi-facets of the thoracic vertebra.

The head of a rib articulates in a region between 2 thoracic vertebrae, contacting the inferior demi-facet of the top vertebra, and the superior demi-facet of the bottom vertebra.

The feature at letter C articulates with which bone?

The head of the humerus articulates with the scapula at the glenoid cavity.

Which of the following bones is not part of pectoral girdle?

The humerus, it is a part of the upper limb.

The __________ is the only bone in the body that does not directly articulate with any other bone.

The hyoid bone does not articulate directly with any other bone. Instead, it is anchored by the stylohyoid ligaments to the styloid process of the temporal bones.

Identify the small facial bones found in the medial wall of the orbit.

The lacrimal bone along with the sphenoid, ethmoid, and frontal bones make up the medial wall of the orbit.

Which bone is NOT considered to be part of the cranium?

The lacrimal bone is a tiny bone found in the medial portion of the orbit. It is a facial bone, not part of the cranium.

Which of the designated bones articulates with both the vomer and the nasal bones?

The maxilla articulates with both the nasal bone and the vomer

Which of the following bones does NOT fit with the other listed bones?

The maxilla is the only listed bone that is not part of the cranium. Instead, it is a facial bone.

Most facial bones articulate with the __________.

The maxillary bones (maxillae) are considered the keystone bones of the facial skeleton. They form the central part of the facial skeleton, articulating with all facial bones except the mandible.

Which of the following would be most associated with process of warming, humidifying, and filtering the air we inhale?

The nasal cavity

Which bone or pair of bones forms the most superior portion of the cranium?

The parietal bones form the superior-most portion of the cranium.

Which of the following bones is unpaired?

There is only one frontal bone. It forms the anterior portion of the cranium (the forehead region)

Which of the following is NOT a characteristic of the parietal bones?

They form the base of the skull. The base of the cranium (skull) is formed by the occipital bone (not the parietal bones).

The sphenoid bone is sometimes referred to as a "key stone" of the skull. This is due to the fact that ________.

the sphenoid is in the center of the skull and it articulates (joins) with all of the other bones of the skull (excluding the mandible)

Which of the following would be most associated with housing the special sense organs?

the temporal bones

The rib cage is composed of 12 pairs of ribs, 24 ribs in total. The 12 pairs of ribs articulate with the

thoracic vertebrae posteriorly.