Welcome back! This week we are
focusing in on the skeletal system which is discussed in GREAT detail in
Chapter 6 of our Anatomy & Physiology book.
Bones are classified by the axial skeleton and the appendicular
skeleton. Then, they are further broken
down into different classifications by their shape (long, short, flat and irregular
bones). The main functions of the
skeletal system are support, protection, movement, mineral/growth factor
storage, and blood cell formation.
There are a lot of different types
of bone markings, bulges, depressions, and holes that are used for muscle,
ligament, and tendon attachment, as joint surfaces, and lastly conduits for
blood vessels and nerves. There are a bunch of names for there are different
markings, I would recommend making notecards of all these terms for the test
because these marking names seem like easy exam questions that you don’t want
to miss! Here is a list of all the vocabulary that you should make sure you have
memorized!
- · Process- any bony prominence
- · Tuberosity- rounded projection
- · Crest- narrow, prominent ridge of bone
- · Trochanter- large, blunt, irregular surface
- · Line- narrow ridge of bone
- · Tubercle- small rounded projection
- · Epicondyle- raised area above a condyle
- · Spine- sharp, slender projection
- · Head- bony expansion carried on a narrow neck
- · Facet- smooth, nearly flat articular surface
- · Condyle- rounded articular projection
- · Ramus- arm-like bar of bone
- · Meatus- canal-like passageway
- · Sinus- cavity within a bone
- · Fossa- shallow, basin-like depression
- · Groove- furrow
- · Fissure- narrow, slit-like opening
- · Foramen- round or oval opening through a bone
If you memorize these terms, it will be easier to be able to
point out certain markings on specific bones during the exam. If you look at
the structure that is being asked to identify, you will have these terms
memorized and could use process of elimination to figure out the correct
answer!
Next, I am briefly going to discuss the 2 different types of
bone texture. The first is compact bone. This texture of bone is found right on
the inside of the articular cartilage of the bone. It is mostly there for
protection. The second texture of bone is spongy bone. This is like honeycomb
of trabeculae foiled and it contains red or yellow bone marrow. It is located
in the center of the bone.
Remember to keep reviewing and reading for more studying
tips and key points from the book!
Word count: 390
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