1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andrej [43]
4 years ago
14

Fetal vertebrae develop through endochondral ossification from a preexisting __________ model. The second step of repair of a fr

acture of these bones is the formation of a(n) __________ callus.
Biology
1 answer:
navik [9.2K]4 years ago
7 0

Answer:

1. hyaline cartilage

2. a fibrocartilage

Explanation:

In endochondral ossification to produce fetal vertebrae, cartilage is substituted with a bone. The process of endochondral ossification includes the development of hyaline cartilage, also called the cartilage model. The hyaline cartilage develops from the chondroblasts derived from mesenchymal cells. The division of chondroblasts results in the growth of hyaline cartilage. It is followed by the development of the primary ossification center wherein the cartilage tissue is replaced with the bone matrix.  

During the repair of these bones, a fibrocartilage callus is formed. Fibroblasts present in the site where the bone is broken produce collagen fibers and the cells derived from periosteum develop into chondroblasts and begin to produce fibrocartilage in this region. The fibrocartilage and collagen fibers together make the fibrocartilage callus that joins the broken ends of the bone.

You might be interested in
How many electrons fill each of the orbital levels in the diagram below?
Lapatulllka [165]
Its 18 electron

1st orbital : maximum = 2 electrons
2nd orbital : maximum = 8 electrons
3rd orbital : maximum = 8 electrons

2+8+8 = 18 electrons
8 0
3 years ago
Unlike the female reproductive system, the male reproductive system
Zina [86]
Could you add a little more to this question, please?
3 0
3 years ago
Read 2 more answers
DNA is coiled into chromosomes in a cells what ?
katovenus [111]

DNA is coiled into proteins,,,,which makes up ur DNA (about  6,400,000,000 basepairs (DNA building blocks) that make up your DNA) basically...and...The way DNA is packaged into chromatin is a factor in how protein production is controlled. so in your nucleus....AGAIN....DNA IS KEPT OR COILED AROUND PROTEIN YET KEPT IN UR NUCLEUS... :)

... i hope this helps somewhat..


7 0
3 years ago
Read 2 more answers
What property makes phospholipids ideal building blocks for cell membranes?
Alenkasestr [34]

Answer:

The polarity of the phospholipid makes it ideal for a building block of cell membranes.

Explanation:

There is the tails which are hydrophobic (water fearing) and the heads which are hydrophilic (water loving). These properties of phospholipids allow the tails to go towards eachother and heads to face the water which maintains a solid structure allowing certain materials to pass through.

8 0
4 years ago
Read 2 more answers
Which best describes a way in which phosphorus may enter into the phosphorus cycle
Alborosie

The following choices are provided;

  • Earthquakes release phosphorus.
  • Phosphorus is carried in the rain that was evaporated from lakes.
  • Human use of fertilizers releases phosphorus into the groundwater.
  • Phosphorus is transpired.

The answer is; Earthquakes release phosphorus

Phosphorus is usually made less available to plants and to the rest of the ecosystem through runoffs. The washed-off phosphorus is deposited at the oceans- and seabeds with sediments. This phosphorus is made available again due to tectonic plate movements. Tectonic movements may cause earthquakes that expose these sediments to the earth’s surface.This uncovers the sedimentary rocks to agents of weathering and hence the elements are more available to living organisms on the surface.


6 0
3 years ago
Other questions:
  • Chantal was eating raisins and a few of them fell into her glass of drinking water. She finished eating the rest of the raisins.
    11·2 answers
  • Lichens, represented by this symbiotic relationship, are responsible for _____________ or the establishment of a new site for pl
    7·2 answers
  • What factors determine where a population can live?
    9·1 answer
  • How are human beings and chimpanzees phylogenentically related
    15·1 answer
  • What term refers to the gene that is expressed when two different genes for a trait are present in a gene pair?
    15·1 answer
  • Converting uranium to thorium by decreasing the number of protons from 92 to 90 and decreasing the number of neutrons from 146 t
    7·1 answer
  • 6. Converging plates can form mountains, volcanic eruptions, earthquakes, tsunamis, and islands.
    6·1 answer
  • 4.
    15·1 answer
  • In florida, black bears are found in only a few regions. Roads and highways cross all of these regions. If new road construction
    15·1 answer
  • Mitochondria contain their own genome and duplicate by fission. even so, mitochondria cannot function for long when isolated fro
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!