LAB EXAM 2 (BIO 227) QUESTIONS AND COMPLETE ANSWERS.
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Course
Biology 227
Institution
Biology 227
axial skeleton - Answer skull
thoracic cage
vertebral column
long bones - Answer longer than they are wide
phalanages
femur
compact bone
short bones - Answer cube shaped
more spongy and compact bone
tarsals and carpals
flat bones - Answer thin
compact/sponge/compact san...
compact vs spongy bone - Answer compact: smooth, homogenous
spongy: trabecullae, lots of space in between
what are the functions of the skeletal system: - Answer support
movement
protection
formation of blood cells
mineral & fat storage
, site of muscle attachment
site of hematopoiesis
osteoclasts v osteoblasts - Answer OsteoBlast: B is for Build (bone tissue)
- secretes bone matrix
OsteoClast: C is for Chew, as in chew up (break down (reabsorb) bone tissue)
hemopoiesis - Answer the production of blood cells and platelets, which occurs in the bone marrow.
yellow v red marrow - Answer yellow: adipose tissue, storage (medullary cavity)
red: found in marrow cavities BLOOD
sagittal suture - Answer joins 2 parietal bones
coronal suture - Answer joins parietal bones and frontal bone
lambdoid suture - Answer parietal and occipital
what are the numbers of "true ribs" and what makes them "true"? - Answer 1-7
attach directly to the sternum by their own costal cartilages
what are the numbers of "false ribs" and what makes them false? - Answer 8-12
attach indirectly to the sternum, or entirely lack sternal attachment
bones of the pectoral girdle - Answer clavicle
scapula
what bone fits into the large cavity created by the scapula, what what is that cavity called? - Answer
humerus
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