Skeletal Homework
Height begins to decrease on average after age
30.
At which of the following ages would calcium loss from bone be more than calcium deposits into bone, even when a high calcium diet is eaten?
50 years old
Which of the following is(are) an example of an intramembranous bone?
Broad, flat skull bones
Which of the following is not a function of bones?
Contraction
Bone-building cells beneath the endosteum lay down bone to form ridges around a blood vessel.
False
Once a tunnel of bone is formed around a blood vessel, the bone-building cells of the periosteum lay down bone in concentric circles that fill in the tunnel.
False
Which of the following is not a step in endochondral bone formation?
Hyaline cartilage changes to adipose tissue.
What is a function of bone that is due to its relationship with skeletal muscle?
Movement of limbs
Throughout life, bone tissue continues to change. ______ are responsible for resorbing bone matrix and ______ are responsible for replacing it.
Osteoclasts; osteoblasts
A six-month-old baby is admitted to the hospital with a broken bone. This is the third fracture in the otherwise healthy child. The parents are arrested on charges of child abuse. The defense lawyer gets the charges dropped after the results of genetic tests indicate which of the following conditions?
Osteogenesis imperfecta
Which of the following is not found associated with spongy bone?
Osteons
What is the role or function of yellow marrow in the bone tissue?
Yellow bone marrow is a site for storage of fat.
What is the definition of hematopoiesis?
The process of blood cell formation.
Which is true of sex hormones?
They stimulate ossification of the epiphyseal plates.
Which of the following bones is not part of the orbit of the skull?
Vomer
Which of the following are components of the pelvic girdle?
all of the above.
Bones in the legs, arms, spine and pelvis grow:
at different rates.
What is the most important mineral to assist in maintaining strong bone throughout life?
calcium
The secondary curves of the vertebral column are the
cervical and lumbar curvatures.
The atlas is one of the
cervical vertebrae.
What is the end of a long bone called?
epiphysis
The talus, calcaneus, navicular, cuboid, and lateral, intermediate, and cuneiform bones are all part of the
foot
Articular cartilage is
hyaline cartilage.
Curvatures of the spine produce all of the following except
increased height.
The zygomatic bone is an example of a(n)
irregular bone.
The femur
is all of the above.
The concentric rings of compact bone are called:
lamellae.
The hard palate is composed of the
maxillary and palatine bones.
Bacteria infecting the mucous membranes in the air cells of the mastoid process most likely spread from the
middle ear.
Articular cartilage of a long bone is found
on the outer surface of the epiphyses.
Bone-producing cells are called:
osteoblasts.
The combination of all of the concentric rings of bone built around blood vessels is called a(n):
osteon.
Bisphosphonates are drugs that slow the progress of
osteoporosis.
Which of the following is not considered a weight bearing activity?
swimming
In which decade of life does the removal of the bone matrix first exceed production of new bone?
third decade
The primary curves of the vertebral column are the
thoracic and sacral curvatures.
The presence of an epiphyseal plate indicates that
the bone is lengthening.
The zygomatic arch is composed of processes of
the zygomatic and temporal bones.
Trusses and arches which help form an internal scaffolding network are found in:
trabecular bone.
Ribs that join the sternum directly by costal cartilages are called
true ribs.
The number of bones in the skeletal system is
variable
What vitamin is necessary for proper absorption of calcium in the small intestines?
vitamin D