CH 7 MAP questions

Which of the following bones is not a facial bone? Maxillary Zygomatic Inferior nasal concha Ethmoid

Ethmoid rationale: Correct. The ethmoid bone forms the area of the cranium between the nasal cavity and the orbits.

Name the vertebral projection found in a median plane. Superior articular process Transverse process Spinous process Inferior articular process

Spinous process rationale: The spinous process extends posteriorly in a median plane. It serves as a site of muscle and ligament attachment.

Which facial bones makeup the central portion of the bridge of the nose? Zygomatic Nasal Lacrimal Maxillary

Nasal rationale: The 2 tombstone shaped nasal bones are found above the nasal cavity. They form a continuous bony bridge that connects the 2 sides of the face.

Which of the following bones do not contain a sinus? Frontal Nasal Maxillary Sphenoid

Nasal rationale: 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.

Which bones form each pectoral girdle? Scapula and clavicle Humerus and scapula Humerus, clavicle, and scapula Ribs, sternum, and thoracic vertebrae Sacrum and coccyx

Scapula and clavicle rationale: The pectoral girdles are very light and provide the upper limbs with wide range of motion. Each clavicle holds the scapula laterally away from the body and allows the scapula to move freely across the thorax. The scapula's glenoid cavity is shallow and poorly reinforced, so it does not restrict movement of the humerus at the shoulder. Although this arrangement is good for flexibility, this wide range of motion makes the shoulder joint unstable and susceptible to dislocations.

Name the foramen at letter C. Inferior view of actual skull with mandible removed. foramen lacerum jugular foramen foramen ovale foramen magnum

foramen magnum

Identify the articulation site that allows us to rotate our head, e.g. shaking the head "no". Occipital bone - axis Atlas - axis Occipital bone - atlas Axis - C3

Atlas - axis rationale: The prominent projection known as dens on the axis forms a pivot joint with the atlas, allowing the atlas to rotate around the axis. The axis is a very sensible name for C2 since it serves as a central axis for rotation of the atlas.

What is the name of the second cervical vertebra? Atlas Axis Vertebra prominens Dens

Axis rationale: C2 is known as the axis. It has a bony projection called the odontoid process that articulates with C1. C1 can pivot around C2, allowing us to rotate our head/shake head "no".

Individual vertebrae articulate with each other forming the vertebral column. Identify the part of a vertebra that articulates immediately with the vertebra below it. Inferior articular processes Transverse processes Superior articular processes Spinous process

Inferior articular processes rationale: The inferior articular processes contact the superior articular process of the vertebra below it, forming a moveable synovial joint.

Which of the following structures would not be found within a vertebral foramen? Intervertebral discs Dura mater Spinal nerve roots Spinal cord

Intervertebral discs rationale: The intervertebral discs are located in between the vertebral bodies. They form a symphysis with the bodies and act as a shock absorber.

Identify the small facial bones found in the medial wall of the orbit. Lacrimal Palatine Inferior nasal concha Zygomatic

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

Which facial bones fuse to form the upper jaw? Zygomatic Lacrimal Maxillary Nasal

Maxillary rationale: The fused maxillary bones are known as the maxilla, and form the upper jaw and part of the palate.

Which of the following facial bones contain a sinus? Inferior nasal concha Zygomatic Nasal Maxillary

Maxillary rationale: The maxillary bones contain the maxillary sinuses. They are the largest sinuses, located laterally to the nasal cavity in the region of the cheek.

Identify the articulation site that allows us to nod our head "yes". Occipital bone - atlas Occipital bone - C2 Occipital bone - axis Atlas - axis

Occipital bone - atlas rationale: The padlike occipital condyles found on both sides of foramen magnum sit on top of the plate like superior articular processes of the atlas, forming the atlanto-occipital joint. The articular surfaces permit nodding of the head in a "yes" motion (flexion and extension).

Identify the region of the skull that articulates with the atlas. Superior articular facets Foramen magnum Mastoid processes Occipital condyles

Occipital condyles rationale: The occipital condyles found on both sides of foramen magnum sit on top of the atlas, forming the atlanto-occipital joint.

Which of the following statements is FALSE? The pubic arch is broader in the pelvis of a female than in the pelvis of a male. The pelvic outlet is narrower in a female than in a male. The female pelvis is tilted further forward than the male pelvis. The female pelvis is thinner than that of a male.

The pelvic outlet is narrower in a female than in a male. rationale: The pelvic outlet is narrower in a male than in a female. The female pelvis is modified for childbearing; it is wider, shallower, and lighter than the male pelvis. The male pelvis has thicker, heavier bones with more prominent bone markings, acetabula that are larger and closer together, and a narrower, heart-shaped pelvic inlet.

Which of the following is NOT a characteristic of the parietal bones? They are paired. They form the bulk of the cranial vault. They form the base of the skull. The four largest sutures occur where the parietal bones join to other bones.

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

Identify a lateral projection of a vertebra. Lamina Transverse process Superior articular process Spinous process

Transverse process rationale: The transverse processes of a vertebra project laterally from the junction of the lamina and pedicle.

What is the anatomical name for the facial bones known as "cheekbones"? Zygomatic bones Nasal bones Maxillary bones Lacrimal bones

Zygomatic bones rationale: The zygomatic bones are known as the cheekbones. Together, the zygomatic bone and the temporal bone form the zygomatic arch. This region is the bony foundation of the facial prominence known as the cheek.

What is the name of the first cervical vertebra? Atlas Occipital condyles Superior articular process Axis

atlas rationale: The atlas is essentially a ring of bone. Its structure is highly specialized to articulate with the skull. person in greek mythology who holds up the world

Identify the major weight bearing part of a vertebra. Lamina Transverse process Vertebral foramen Body

body rationale: The disk shaped bodies of vertebrae are stable and stackable. Most weight is distributed in this region.

Which of the following bones are part of the axial skeleton? bones of the face bones of the the pelvic girdle bones of the pectoral girdles bones of the lower limbs

bones of the face

The dens articulates with the occipital bone. True False

false

The largest and strongest bone of the face is the maxilla. True False

false

The shallow socket of the shoulder joint restricts the movement of the humerus but does increase the stability of the joint. True False

false

The frontal bone articulates with the parietal bone by means of the sagittal suture. True False

false Rationale; the suture that articulates the frontal bone with the parietal bones is the coronal suture

Which of the following bones is not weight bearing? tibia femur fibula talus

fibula

Which of the following bones is unpaired? Parietal Temporal Frontal Zygomatic

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

The hyoid bone is unique because it ________. is the only bone of the body that does not articulate with any other bone is the only bone formed by the fusion of right and left halves is the only irregular bone found in the neck is composed of three bones joined together

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

Which bone is NOT considered to be part of the cranium? Ethmoid bone Sphenoid bone Occipital bone Lacrimal bone

lacramal rationale: 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.

Name the highlighted bone(s). Lateral oblique view of the lower jaw. maxillary bones, or maxillae mandible, or mandibular bone temporal bones zygomatic bones

mandible, or mandibular bone rationale: This bone forms the lower jaw and contains half of your teeth.

Identify the suture found between the 2 parietal bones. Sagittal suture Squamosal suture Lamdoidal suture Coronal suture

sagittal suture rationale: The parietal bones meet at midline on the top of the skull, forming the sagittal suture which runs along the midsagittal plane.

The feature at letter C articulates with which bone? Anterior aspect of the right humerus. clavicle ulna radius scapula

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

Which cranial bone spans the width of the cranial floor? Temporal Ethmoid Sphenoid Occipital

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

Which is the largest, longest, and strongest bone in the body? the fibula the femur the os coxae the tibia

the femur rationale: The femur is the largest, longest, and strongest bone in the body. Its durable structure reflects the stress exerted on the femur as it bears the weight of the body when standing, walking, or running.

Which part of the vertebral column receives the most stress by bearing most of the weight of the body? the cervical region the lumbar region the sacrum the sacral promontory

the lumbar region

Which of the following bones does NOT fit with the other listed bones? the maxilla the sphenoid the occipital bone the frontal bone

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

Which bone or pair of bones forms the superior portion of the cranium? the occipital bone the parietal bones the frontal bone the temporal bones

the parietal bones

The axial skeleton includes ________. the skull, vertebral column, and rib cage arms, legs, hands, and feet the skull, vertebral column, and pelvis the skull, the scapula and the vertebral column

the skull, vertebral column, and rib cage

Which of the following is NOT a facial bone? the vomer bone the maxilla the sphenoid bone the zygomatic bone the nasal bone

the sphenoid bone rationale: The sphenoid bone is a cranial bone.

All of the bones of the adult skull, except the mandible, are united by sutures and are therefore immovable. True False

true

Name the bone feature identified by the letter D. Superior view of a typical vertebral bone of the hole. vertebral foramen foramen magnum transverse foramen intervertebral foramen

vertebral foramen rationale: The vertebral foramen, framed by the vertebral arch and the body, allows passage of the spinal cord.

Which bone forms the prominence of the cheek? palatine bone temporal bone zygomatic bone sphenoid bone

zygomatic bone