ANT100Y1 Lecture Notes - Incisive Foramen, Temporal Bone, Sella Turcica

10 views7 pages
Published on 12 Oct 2012
School
UTSG
Department
Anthropology
Course
ANT100Y1
Professor
lec 2 ant334 9/19/2012 7:12:00 AM
1
Cartilage is a form of connective tissue in the body
Hyaline cartilage binds every synobial joints
o Tough tissue, little ability to renewal
Fibrocartilage
o Between vertebrae
Elastic cartilage
o Least common in ears (pinnae)
Bone as a tissue: structure and chemical composition
Tuberculi spine eaten away by virus villi (3 vertebrae fused
one wedged between 2)
In lab 20% water in bone is gone + lipid component is gone (bone
afterlife no water no lipid it does have collagen protein and calcium
phosphate hydroxyapatite)
o Bone in life has a lot of fat in it
o Protein in bone very important for ispotope analysis (what the
person ate) and for
o Inorganic part of bone: calcium phosphate hydroxyapatite is
loose crystal accepts substitution easily (more easily than the
other mineral in our body enamel (teeth)
Especially after death inorganic part still chemically
active
Bone is like spider web /oak between flexible+weak and flexible and
strong
o Difficult to mimic
Structural types of bone tissue(different types of bone)
Woven
o Always transient
o Only heals as a baby/or when healing
Cancellous/spongy/trabecular all same thing BONE
Cortical/compact full of tiny little holes , more dense then spongy
Subchondralsits beneath a cartilage on a joint surface (chondra
cartilage, cells that make cartilage chondrocytes)
Diploiccortical spongy cortical sandwhich SKULL BONE
Where does bone come from 2 pathways but bone is bone
Formed from cartilaginous template
Unlock document

This preview shows pages 1-2 of the document.
Unlock all 7 pages and 3 million more documents.

Already have an account? Log in
2
o Endochondral(within cartilage template) ossification(to form
bone)
o Most of post cranial skeleton follows this pattern
o Most dominant form + skeletal health
Formed directly from membrane
o Intramembranous ossification
o Most of skull
o Clavicle
Bone Growth
Fontanelles only in baby skulls skull bones still have not joined
o Just membrane
o Trapezoid shape
o Absence of joining = flexibility to move through birth canal
o Frontal bone(not a paired bone in adulthood) in babies is 2
frontals separated by a metopic suture : will be gone by age 2
Tibia
o Under the endochondral bone is the cancellous tissue with red
bone marrow
o Every growing long bone has a epiphysis(growing end) at the
superior and inferior end :only grows here not at the shaft
o Outside of bone tough connective tissue is periosteum
o Under the periosteum is the compact tissue: cortal bone
o Shaft of bone is diaphysis
o Nutrient artery to feed the medullary canal with yellow bone
marrow which goes through a hole in the diaphysis
Hole in the bone: foramen (functional hole)
Nutrient foramen
Proximal epiphysis always forms first fuses last
o At 18 fuses
o For couple years shaft of bone can get thicker get more mass
o Initial bone is woven bone(baby bone) and then replaced by
interstitial lamellae (layers,lamery bone) minerals held
together by collagen
o Then you get 2ndery osteon : which have blood vessel
throught it
o Use secondary bone to age bone
Unlock document

This preview shows pages 1-2 of the document.
Unlock all 7 pages and 3 million more documents.

Already have an account? Log in

Document Summary

Cartilage is a form of connective tissue in the body. Hyaline cartilage binds every synobial joints: tough tissue, little ability to renewal. Elastic cartilage: least common in ears (pinnae) Bone as a tissue: structure and chemical composition. Tuberculi spine eaten away by virus villi (3 vertebrae fused one wedged between 2) Especially after death inorganic part still chemically active. Bone is like spider web /oak between flexible+weak and flexible and strong: difficult to mimic. Structural types of bone tissue(different types of bone) Woven: always transient, only heals as a baby/or when healing. Cortical/compact full of tiny little holes , more dense then spongy. Subchondral sits beneath a cartilage on a joint surface (chondra. Diploic cortical spongy cortical sandwhich skull bone. Where does bone come from 2 pathways but bone is bone. 1: endochondral(within cartilage template) ossification(to form bone, most of post cranial skeleton follows this pattern, most dominant form + skeletal health.

Get OneClass Grade+

Unlimited access to all notes and study guides.

YearlyMost Popular
75% OFF
$9.98/m
Monthly
$39.98/m
Single doc
$39.98

or

You will be charged $119.76 upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.