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Bio 210-Chapter 7
Skeletal System
102
Biology
Undergraduate 1
10/04/2012

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Term
What bones make up the skull?
Definition
facial bones and cranial bones
Term
Name the auditory ossicles.
Definition
malleus, incus and stapes
Term
What is special about the hyoid bone?
Definition
the hyoid bone does not articulate with any other bone
Term
What does the hyoid bone support?
Definition
supports the tongue
Term
What bones make up the vertebral column?
Definition
vertebrae, sacrum, coccyx
Term
What bones make up the thoracic cage?
Definition
ribs and sternum
Term
Are the ribs and sternum, and the vertebrae, sacrum, coccyx in the axial or appendicular skeleton?
Definition
axial skeleton
Term
What bones make up the pectoral girdle?
Definition
clavicle and scapulae
Term
What bones make up the pelvic girdle?
Definition
coxal bone which is composed of the ilium, ishium and pubis
Term
What bones make up the lower extremities?
Definition
femur, tibia, fibula, patella, tarsals, metatarsals and phalanges
Term
What bones make up the upper extremities?
Definition
humerus, ulna, radius, carpals, metacarpals, phalanges
Term
What type of bones are arms and legs with expanded ends?
Definition
long bones
Term
What type of bones is cube-shaped, such as in the wrist and ankles?
Definition
short bones
Term
What type of bones are cranial, ribs, scapulae and plate-like bones?
Definition
flat bones
Term
What type of bones has a variety of shapes, such as the vertebrae?
Definition
irregular bones
Term
What type of bones can be found between sutures of cranial bones?
Definition
sutural bones
Term
The patella is what type of bone?
Definition
sesamoid bone
Term
List the functions of bones.
Definition
functions to support, protect, store energy, produce blood cells, maintain homeostasis, produce hormones, and store minerals
Term
Where is energy stored in bones?
Definition
in yellow marrow as fat
Term
What is hematopoiesis or hemopoiesis?
Definition
blood cell formation
Term
What makes up the bone matrix?
Definition
mineral salts and collagen fibers
Term
What type of tissue is bone?
Definition
connective tissue (supporting)
Term
Which bone cells are bone destroying cells?
Definition
osteoclast
Term
What is a mature bone cell called?
Definition
osteocytes
Term
Which bone cells are bone building cells?
Definition
osteoblast
Term
Where is a mature bone cell located?
Definition
lacunae
Term
What is the shaft of the long bone called?
Definition
diaphysis
Term
What is the hollowed out part of the shaft called?
Definition
medullary cavity
Term
What is located in the medullary cavity in an adult?
Definition
yellow marrow
Term
What kind of tissue is in the medullary cavity of an adult?
Definition
adipose tissue
Term
What type of bone makes up most of the shaft of the bone?
Definition
compact bone
Term
Where is spongy bone found?
Definition
lining the medullary cavity
Term
What is the structural unit of spongy bone?
Definition
trabeculae
Term
What is the structural unit of compact bone?
Definition
osteon
Term
What type of marrow is found in the hollow spaces in spongy bone?
Definition
red marrow
Term
What is the function of red marrow?
Definition
site of blood cell production
Term
What is ossification?
Definition
the formation of bone tissue
Term
What type of tissue makes up the embryonic skeleton?
Definition
hyaline cartilage
Term
Where is the primary ossification center located?
Definition
in the middle of the diaphysis of the long bone
Term
What type of bone cells begins ossification process?
Definition
osteoblast
Term
What type of bone cells hollow out the medullary cavity?
Definition
osteoclast
Term
Where is the secondary ossification center?
Definition
in the epiphysis where bone replaces the cartilage
Term
If the epiphyseal plate is cartilaginous has bone growth stopped?
Definition
no, because it stays cartilaginous as long as the bone is growing
Term
What are the soft spots on the cranium of an infant?
Definition
fontanels
Term
Where is the pituitary gland located and in which bone?
Definition
in the sella turcica of the sphenoid bone
Term
What do the meninges attach to?
Definition
crista galli
Term
What do the olfactory nerves pass through to get inside the brain?
Definition
cribriform plate
Term
What is located on the temporal bone and contains air cells?
Definition
mastoid process
Term
What is the canal the leads to tympanic membrane?
Definition
external auditory meatus
Term
What is the hyaline cartilage called between the ribs and sternum?
Definition
costal cartilage
Term
What is the common name for the first cervical vertebra?
Definition
atlas
Term
What is the common name for the second cervical vertebra?
Definition
axis
Term
What process is on the second cervical vertebra that the first cervical vertebra pivots around?
Definition
dens (or odontoid process)
Term
What is the tendon that attaches the gastrocnemius to the calcaneus?
Definition
calcaneal tendon
Term
What is the superior portion of the ilium called?
Definition
iliac crest
Term
What is the most posterior and interior point of ischium?
Definition
ischial tuberosity
Term
Where does the femur articulate with the coxal bones?
Definition
acetabulum
Term
What and where is the largest foramen in the body?
Definition
obturator foramen; in the coxal bone of the pelvic girdle
Term
What is the opening in the occipital bone called?
Definition
foramen magnum
Term
What is the opening in the center of the vertebrae called?
Definition
vertebral foramen
Term
What are the openings in the cribriform plate called?
Definition
olfactory foramen
Term
Name the paranasal sinuses and where they drain.
Definition
maxillary sinus, sphenoidal sinus, ethmoidal sinus and frontal sinus; they drain into the nasal cavity
Term
Name three vitamins necessary for bone maintenance.
Definition
vitamins D, A and C
Term
Which vitamin is necessary for calcium absorption?
Definition
vitamin D
Term
Which vitamin is necessary for collagen formation?
Definition
vitamin C
Term
Which vitamin needs ultraviolet radiation?
Definition
vitamin D
Term
What does physical exercise do to bones?
Definition
stimulates bone growth
Term
What does the lack of physical exercise do to bones?
Definition
bone tissues waste away becoming thinner and weaker
Term
What type of joint is held together by dense CT?
Definition
fibrous joints
Term
What type of movement does the above joint have?
Definition
no movement
Term
Give an example of the above joint.
Definition
bones in the skull
Term
What type of joint is held together by fibrocartilage?
Definition
cartilaginous joints
Term
What type of movement do cartilaginous joints exhibit?
Definition
slightly moveable
Term
Give two examples of cartilaginous joints.
Definition
symphysis pubis and intervertebral discs
Term
What type of joint has a joint cavity?
Definition
synovial joint
Term
What type of membrane surrounds the joint cavity of a synovial joint?
Definition
synovial membranes
Term
What do synovial membranes secrete?
Definition
synovial fluid
Term
What is the function of synovial fluid?
Definition
functions to reduce friction
Term
Give an example of a synovial joint.
Definition
shoulder
Term
What are the fluid filled sacs that are sometimes associated with synovial joints?
Definition
bursa
Term
What is the purpose of the fluid filled sacs bursae?
Definition
reduces friction between ligaments or tendons
Term
Which type of membrane is found in the inner lining of bursae?
Definition
synovial membranes
Term
Give four examples of freely moveable joints.
Definition
shoulder, hip knee, elbow, wrist, ankle, thumb, jaw and neck (freely moveable joints = synovial joints)
Term
What are two examples of ball-and-socket joints?
Definition
hip and shoulder
Term
What are two examples of hinge joints?
Definition
elbow and knee
Term
Give two examples of pivot joints.
Definition
atlas and axis; proximal ends of the radius and ulna
Term
Give an example of a saddle joint.
Definition
between the carpals and the metacarpals of the thumb
Term
Give an example of a gliding joint.
Definition
carpal bones
Term
Give an example of a condyloid joint.
Definition
between the metacarpal bone and the phalanges
Term
What is movement away from the midline?
Definition
abduction
Term
What is movement toward the midline?
Definition
adduction
Term
What is movement that decreases the angle between bones?
Definition
flexion
Term
What is movement that increases the angle between bones?
Definition
extension
Term
What is extension beyond the anatomical position?
Definition
hyperextension
Term
What is movement of a body part upward?
Definition
elevation
Term
What is movement of a body part downward?
Definition
depression
Term
What is movement of the sole of the foot outward?
Definition
eversion
Term
What is movement of the sole of the foot inward?
Definition
inversion
Term
What is bending the foot upward?
Definition
dorsiflexion
Term
What is bending the foot downward?
Definition
plantar flexion
Term
What is movement of a bone forward on a horizontal plane?
Definition
protraction
Term
What is movement of a bone backward on a horizontal plane?
Definition
retraction
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