Anatomy exam 2 (day 6)
Order by
53 terms
Terms | Definitions |
|---|---|
 Bone has a rich _____ supply that runs through it, in contrast to cartilage. | nerve |
| within a bones firm intercellular matrix there are cells called ______. | osteocytes |
| these osteocytes live in _____. | lacunae |
| ______ interconnect the lacunae which therefore connects the osteocytes. | canaliculi (look like little cracks or canals) |
| _____ & _____ are cells found on the surface of bone. | osteoblasts & osteoclasts |
| _____ are bone forming (depositing matrix). _____ break bones down or thins them out. | osteoblasts / osteoclasts |
| if you don't take in enough dietary _____ your body will take it from your bones. | calcium |
| _____ start out as osteoblasts but become what they are once they are trapped by their own matrix. | osteocytes |
| what are the two processes that lead to the production of bone? | intramembranous ossification and endochondrial ossification *both result in the same thing |
| Bones that are formed by intramembranous ossification are called _____. what is this kind of bone derived from? | membrane bone / mesenchyme |
| _____ bone is the temporary state of a bone before it is fully formed. the end product is _____ bone. | woven / lamellar |
| Most bones are formed by ______. Bone is first formed by a model of ____ and then it is converted to bone. | endochondrial ossification / cartilage |
| perichondrium is converted to periosteum and the cartilage there is going to be replaced by _____. this ossification is called a _____. A cavity is formed in the bone collar by ______. then the _____ system invades the space. ____ are now on the inside and the outside and start forming bone. | bone / bone collar / digesting away the cartilage / vascular / osteoblasts |
| what becomes bone first: the epiphyses or diaphysis? | diaphysis |
| the thin cartilage that separates the epiphyses from the diaphysis is called the ______. | epiphyseal plate |
| the cartilage is going to be thickened in between the epiphyses and diaphysis in order to ______. Then the cartilage is converted into ____. | make the bone longer / bone *this process is extending the bone as a hollow structure |
| as matrix is being adding to the outside of the bone, making the diameter larger, ____ are eroding the inside of the bone. | osteoclasts |
| what is vascualr tissue's intercellular matrix? | plasma |
| Formed elements in the plasma are... | erythrocytes, leucocytes, thrombocytes, platelets (which are thrombocytes) |
| erythrocytes are _____. what is their general function? | red blood cells (lack a nucleus) / gas exchange |
| leucocytes are ____. | white blood cells |
| ____ are pieces of a cell, and their general function is to plug up leaks. | platelets |
| originally you are made up of a single cell called a ____. | zygote |
| Zygotes first have to decide whether it wants to be ____ or _____. Then ____, ____, or _____. | embryonic or extraembryonic / ectoderm, mesoderm, or endoderm *see chart on pg 1 of development slides |
| the ____ eventually gives rise to your vertebral column. the hole in the body tube is called the _____. the _____ surrounds it. | body tube / coelum / serous membrane |
| the ____ runs through the coelum. another ____ surrounds it. | gut tube / serous membrane |
| the ____ period is the first 8 weeks of life. | embryonic |
| Look at adult body plan slides | DORSAL BODY WALL |
| In forming the ____, you must have bone, muscle, and skin. | limbs |
| True or False: girls are born with the most eggs they are ever going to have. | True |
| the egg is otherwise know as the ____. | ovum |
| After the blister is popped, The ovum is projected through the ______ and then the _____ catches the ovum. Fertilization takes place in the _____. | fallopian tube / ova duct / top 1/3 of the ova duct *see ovulation video |
| _____ has a head made of DNA and tail made of flagellum. | sperm |
| cell division during development is called ____. during this processes the cells become ____ after each division. | cleavage / smaller |
| When the embryo has 32-64 cells its in the ____ stage. As the cells continue to divide past this, it becomes a ______. | morula / blastocyst |
| Inside the blastocyst is a group of cells called the ____. | Intercellular mass (ICM) |
| the ____ are in the outer wall of the blastocyst and contribute to the placenta. | trophoblasts |
| the ____ is the space inside the blastocyst. | blastocoel |
| when the blastocyst arrives at the uterus _____ occurs. | implantation |
| in the ICM, there are two spaces that develop, each surrounded by _____. Where the two spaces come together is called a _____. some of the cells of this help develop the ___. | a single layer of cells / bilaminar disc / embryo |
| the bilaminar disc sits between the ____ & ____. | amniotic sac & yolk sac |
| the layer of cells that face the yolk sac is called _____. the layer of cells that face the amniotic sac is called ____. | endoderm / ectoderm |
| the groove that forms in the surface of the ectoderm is called the _____. the head of this is called_____. this groove establishes _____. | primitive streak / Henson's node/ the longitudinal axis of the embryo |
| once the primitive streak is formed ____ fall into the groove and begin to spread in between the ____ & _____ (germ layers) and form the third germ layer called ____. | cells / ectoderm & endoderm / mesoderm |
| mesoderm is arranged as _____ and ectoderm & endoderm are arranged as ______. | mesenchyme (freely migrating embryonic cell) / epithelium |
| The bilaminar disk is now the ____ because the third germ layer has formed. | trilaminar disk |
| True or False: All adult systems are traced back to the germ layers. | True |
| the nervous system arises from the ____, the gut arises from the _____, the muscles and skeleton arise from the _____. | ectoderm / endoderm / mesoderm |
| the ____ is derived from mesoderm and provides support to the embryo. | notochord |
| the ___ are the reminence of the notochord. | intervertebral discs |
| mesoderm starts to condense into solid blocks called ___. the ____ mesoderm is the area of the mesoderm that thins out. the ____ mesoderm divides into two parts and the ____ is formed. | somites / intermediate / lateral plate mesoderm / coelum |
| the part of the lateral plate mesoderm that becomes associated with the ectoderm is called _____. | somatic mesoderm *note SOMITIC mesoderm is associated with somites |
| the part of the lateral plate mesoderm that becomes associated with the endoderm is called ____. | splanchnic mesoderm |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.