The Bones and Markings of the Skeleton:
What is the opening for the ear called?
External acoustic meatus
Where is the head of the humerus?
At the proximal end
________ ossification centers appear later in the epiphyses.
Secondary
________(hyaline cartilage) covers the ends at the joints.
__Articular cartilage___
These joints are enclosed in a joint capsule containing ______ fluid.
synovial
What are fontanels?
Soft spots in the skull of a newborn baby, in which the intramembranous ossification of the skull bones is not yet complete.
Bones of the upper limb form the framework for_____, ______, and _____.
the arm, forearm, and hand.
A medullary cavity forms in the region of the diaphysis due to the activity of the cells called
Osteoclasts
The epiphyseal plate (disc) is the site of bone
__growth (in length)____.
A fibrous joint between two flat bones of the skull is called a
suture
The skull is made up of ____ bones, including __ cranial bones and __ facial bones
22 bones, including 8 cranial bones and 14 facial bones.
The ________ is located on the lateral (thumb) side of the forearm.
radius
______ break down the calcified matrix and are replaced with bone-building _______ that deposit bone in place of calcified cartilage.
Osteoclasts, osteoblasts
A bone's shape makes possible its function; bony processes or grooves indicate places of attachment for _____ ______.
muscles and tendons__.
Joints can be classified according to the degree of movement possible and can be ______, ____ ______, _____ _____.
immovable, slightly movable, or freely movable.
What are nasal conchae?
Fragile, scroll-like bones attached to lateral wall of nasal cavity.
What are the 2 processes of the ulna that participate in the elbow joint?
Olecranon and coronoid processes
They first develop as _____ _____ models and are then replaced with bone.
They first develop as ___hyaline___ _cartilage_ models and are then replaced with bone.
The shaft of the bone is called the ____.
_diaphysis.
A _________ joint consists of a bone with a rounded head articulating with the
cup-shaped cavity of another bone; a very wide range of motion is possible.
ball-and-socket
Which two make up the facial cheek bones?
Zygomatic bones
The wrist consists of 8 _____ bones. The hand has 5 _______ and the bones of fingers are called ________.
carpal, metacarpals, phalanges
Cartilage tissue is invaded by blood vessels and _______ that first form spongy bone at the primary ossification center in the diaphysis.
Osteoblasts
The diaphysis contains a hollow ________that is lined with _______ and filled with
______ ______.
medullary cavity, endosteum, bone marrow
Some of these joints contain shock-absorbing pads of fibrocartilage called _____ and may have fluid-filled sacs called ____.
menisci, bursae