Anatomy 6-10
The articular cartilage damaged by osteoarthritis is characterized by________.
A rough network of bristly collagen fibers
What bone is not formed via intramembranous ossification?
Femur
remnants of osteons, which have been almost completely recycled by osteoclasts, are known as_____.
Interstitial Lamellae
Regarding the vertebral arch, what is the significance of the lamina?
It forms the "roof" of the vertebral foramen.
The crista galli, a structural feature of the ethmoid bone, is described as which of the following?
It's a bony ridge that protects superior to the antromedial floor of the cranial
The anterior fontanelle___
Lies at the intersection of the frontal, Sagittal, and coronal sutures
Which nasal complex structure is paired with the correct description
Maxillary sinuses-largest of the sinuses, and produce mucus secretions that flush the inferior surfaces of the nasal cavities
Synovial joints are classified functionally as:
diarthroses
The structure that bears the bodies weight when one is seated is________?
ischial tuberosity
Which foramen is the passageway for nerves to exit the cranium and innervate the jaw and it's associated structures?
Foramen ovale
Which structure supports the larynx and attaches to muscles that move the tongue?
Greater horns of the hyoid bone
Bill, age 15, is still growing, but his older sister Andrea, age 19, has stopped. What has changed in Andrea's bones?
Her epiphyseal plates have ossified.
Which condition, due to excessive cartilage formation at the epiphyseal cartilage, results in individuals who are very tall, with long slender limbs?
Marfan syndrome
In what areas of a long bone will probably be easiest to observe the Cartlidge the orthopedic doctor refers to?
Metaphysis
All of the following result in decreased calcium levels in the blood stream expect?
PTH stimulation of osteoclasts
Ankle fractures that affect both bones of the leg are called________.
Potts fracture
The endomysium____
Surrounds the individual muscle fiber
Which structure acts as a passageway for blood vessels that provide oxygen and nourishment to the brain?
The carotid canal
The Cartlidge the doctor is referring to will disappear when
The osteoblasts work faster than cartilage producing cells
Which skull encloses the structures of the inner ear?
The petrous part of the temporal bone
A hard ossified bone in an adult actually begins within the embryo as a miniature version composed of __________.
hyaline cartilage
Which organ prevents calcium loss in response to PTH stimulation?
kidney
Cells of the perichondrium need to take on a new role as ossification begins. They will become __________.
osteoblasts and begin to deposit bone matrix
The process of osteolysis is performed by which cell population?
osteoclasts
At which joint do pronation and supination occur?
Proximal radio-ulnar joint
Which appendicular joint firmly attaches the axial skeleton to the pelvic girdle?
Sacro-iliac joint
As blood vessels extend into the space left by dying chondrocytes, the models begin to ossify internally. where does internal ossification begin?
The primary ossification center in the diaphysis
Which of the following statements regarding the homeostasis regulation of the blood calcium is False?
The three main organs that serve as the site for the regulation of blood calcium levels are the bones, the intestines, and the pancreas
All of the following are characteristics of periosteum except_____
a) It is an incomplete cellular layer that lines the medullary cavity. ***** b) It provides a route for the blood and nervous supply. c) It has two layers, an inner layer and an outer layer. d) It actively participates in bone growth and repair.
What type of bone growth is the doctor most likely looking for in the example above?
endochondral ossification
Which structures are the joint surfaces that allow the cranium to articulate with the vertebral column?
occipital condyles
Which bone-associated structure is continuous with the capsule of the joint, adding strength and helping to stabilize the joint?
periosteum
The weakening of which primary vertebral ligament may result in the condition called bulging disc?
posterior longitudinal ligament
Which suture forms the boundary between the temporal bone and the parietal bone of that side?
squamous suture
Which thin filament-associated protein binds two calcium ions?
troponin
Artificial joints
usually have a service life of only about 15 years.