Skeletal System Parts 1+2 Flashcards
How many bones are in the vertebral column before birth
33
After maturation, how many vertebral bones are there?
26
How many cervical vertebrae are there
7
How many thoracic vertebrae are there
12
How many lumbar vertebrae are there
5
How many fused bones in the sacrum
5
How many fused bones in the coccyx
4
First vertebrae
atlas (c1)
Second vertebrae
axis (C2)
How many ribs in the ribcage
12
The true ribs are pairs through
1-7
False ribs are pairs through
8-12
The last 2 ribs that do not connect are called
Floating ribs
The three parts of the sternum are:
the manubrium, the body, and the xiphoid process
Which bone has no direct articulation to another bone but provides attachment for many muscles of the mouth and throat
Hyoid
The auditory ossicles include:
malleus, incus, and stapes
Pectoral girdle
collar bones and shoulder blades
Upper imbs
Arms and hands
Pelvic girdle
Coxal bones
Lower Limbs
Legs and feet
Compact bones is
dense and looks smooth
Spongy bone is
made of small pieces of bone with lots of open space
What is found at the ends of long bones
Spongy bone
Spongy bone fills what bones
short, flat, and some parts of irregular
Spongy bones contain what kind of marrow
red
what are mature bone cells called
osteocytes
What are canalicul
channels that let osteoctyes talk
Where are osteocytes found
Lunae
What is the diaphysis
the shaft, composed of compact bone
What is the epiphysis
Ends of long bone, made of spongy bone
What covers the epiphyses
Articular cartilages
What is the line that is a marking left from growth
Epiphyseal line
What occurs in red marrow
Hematopoiesis
What is in yellow marrow
Fat
Where is yellow marrow found
In the medullary cavity of long bones
What is a fossa
Shallow indentation
Fovea
Small pit
Sulcus
a groove for a tendon, nerve, or blood vessel
Foramen
Hole or rounded opening through the bone
Meatus
Tunnel or tube-like passageway through the bone
Sinus
An air-filled space in bone
Canal
Tubular passage or tunnel in bone
Fissure
Slit through bone
Condyle
Large rounded, articulating knob
Facet
Small, articular surface (atlas)
Head
Prominent, rounded, articulating end of bone
Tuberosity
Large, roguhened process
Tubercle
Small, rounded process
Trochanter
on femur only- massive process only on proximal femur
Crest
narrow, ridge-like projection
Spine
sharp, slender process
Process
Prominent piece of bone that may stick out
Epicondyle
Projection above condyle
