Chapter 8: Skeletal System
Which statements describe the false ribs?
They indirectly articulate with the sternum through shared costal cartilages. They articulate with the thoracic vertebrae.
The clavicle is also known as the ______.
collarbone
The depression between the greater and lesser tubercle is called the ______.
intertubercular sulcus
The anterior, weight bearing part of each vertebra is known as the ______.
body
The sternum is also referred to as the ______.
breastbone
Cranial fossae are ______ in the floor of the cranial cavity.
depressions
The true pelvis is ______ to the false pelvis.
inferior
Which bones can clearly be seen on a superior view of the skull?
parietal bones
A clavicle and scapula make up a ______ girdle.
pectoral
The scapula is part of the ______.
pectoral girdle
The glenoid cavity is part of the ___ girdle and the acetabulum is part of the ___ girdle.
pectoral; pelvic
A pectoral girdle consists of two bones, the ___ and the ___.
scapula; clavicle
The clavicle is located between these two bones, the ___ and the ___.
scapula; sternum
Identify the auditory ossicles housed within the petrous part of the temporal bone.
stapes, malleus, incus
Nasal bones form the ______ of the nose.
Bridge
A ______ is a rounded passageway through a bone.
foramen
Which is a function of the cranial bones?
to surround and protect the brain
The right and left maxillae unite to form the ___ jaw.
upper
The maxillae form the ______.
upper jaw
The spinal cord is protected by the ______.
vertebral column
The number of bones in each upper limb is ___ bones.
30
The number of metacarpal bones per upper limb is ______.
5
How many carpal bones are in each wrist?
8
The structures that allow the cranial bones of the fetal skull to overlap as a baby passes through the birth canal are called ___.
Fontanelles
Which component of the thoracic cage consists of a manubrium, body, and xiphoid process?
Sternum
Paranasal sinuses are normally filled with ______.
air
What are true of the pectoral girdle?
articulates with the body trunk supports the upper limb
The hyoid and auditory ossicles are part of the ______ skeleton.
axial
A large, smooth, rounded articulating oval structure on a bone is properly identified as a ______.
condyle
What is the suture that connects the frontal and parietal bones of the skull called?
coronal suture
Sutures are immovable joints forming the boundaries between the ______.
cranial bones
What are the three curved depressions in the floor of the cranial cavity called?
cranial fossae
The last two pairs of false ribs lack connections with the sternum, so they are classified as ______.
floating ribs
The spinal cord enters the cranial cavity through the ______.
foramen magnum
The coronal suture is between the ______ bone and ______ bones.
frontal; parietal
Lateral openings between adjacent vertebrae are called ______.
intervertebral foramina
The greater tubercle is more ______ than the lesser tubercle.
lateral
The bone of the lower jaw is the ___.
mandible
Which bone forms the lower jaw?
mandible
Which bones are part of the pelvis?
ossa coxae sacrum coccyx
The structures that help to lighten the weight of certain skull bones and provides resonance to the voice are the ___ ___.
paranasal sinuses
Which cranial bones are paired?
parietal
The thoracic and sacral curvatures of the vertebral column are classified as ______.
primary curves
The thoracic cage consists of the ______.
ribs sternum thoracic vertebrae
The clavicle extends between the manubrium of the ___ and the acromion of the ___.
sternum; scapula
The occipital bone can be seen from a(n) ______ view of the skull.
superior
Which are functions of the vertebral column?
supports the weight of the head provides vertical support for the body houses and protects the spinal cord
A structure that is an immoveable joint forming the boundary between cranial bones is called a ___.
suture
Which part of the axial skeleton acts as a protective framework around the vital organs of the thorax and provides attachment points for many muscles?
thoracic cage
Which are the primary curves present in the vertebral column of a newborn?
thoracic curvature sacral curvature