Osteoblast

Image 10 compact bone tissue In an image, 10 compact bone tissues give support and structure to the body and permit movement. It also stores calcium and has blood-shaping cells. 2] It consists of osteons and Haversian system. The osteons has a canal which is encompassed by concentric rings of matrix. 1] There are four main types of tissues; epithelium, connective, nervous and muscle, inside of every tissue type, there are varieties present. In image 1, 2 and 3 are of epithelium tissues that…

STEM CELLS Stem cells are very homogenous due to the fact that they are of the same family type or lineage characteristically speaking. They are differentiated from other cells by two features. The first feature is that they are able to divide by cell division and the second feature is that under specific experimental conditions they can be directed to become tissue cells with certain functions. Stem cells are able to transform or regenerate themselves growing into the body’s approximately 200…

There was a scientific breakthrough in 2006 where scientists had discovered a way to genetically reprogram mouse mature cells to convert them into a cell that has embryonic stem cell properties and these cells were named ‘induced pluripotent stem cells’ although it is still undetermined whether this new stem cell and embryonic stem cells are critically different. Human induced pluripotent stem cells were developed a year later in 2007. Scientists are optimistic about these stem cells and they…

the parathyroid glands. B) acts primarily on osteoblasts. C) decreases blood Ca2+ levels. D) acts synergistically with calcitriol. E) acts permissively with PTH. ____ 68. The parathyroid glands A) are embedded within the thyroid gland. B) contain chief cells, which secrete PTH. C) are controlled by negative feedback mechanisms. D) A and B are correct. E) A, B and C are correct. ____ 69. How does PTH increase blood Ca2+ levels? A) by increasing osteoblasts activity B) by increasing renal…

1. After long term exposure to altitude, the body makes several adjustments in order to perform physical activity in the hypoxic condition. A) What chronic adaptations are most beneficial for performance at altitude? When one goes into high altitudes their immediate response are somewhat negative the increase in ventilation, decrease in carbon dioxide, respiratory alkalosis, being in a hypoxic state and many more. However, when having an exercise performance such as the winter Olympics one…

Dental implants have more and more become a routine permanent treatment to replace missing teeth. They are used to support one or more false teeth, with a long-term solution that is as close to the natural teeth as possible. Dental implant is the best tooth replacement option that give a good long lasting outcome (Misch 2014). Implants help reserve the surrounding bone that resorbs – as a natural effect - when a tooth is lost. A dental implant, made of titanium, usually looks like a screw-shaped…

Background Information Singapore is currently undergoing the setback of a rapidly ageing population. Invariably, the older generation aspires to age gracefully and successfully but, the truth is that only some are able to enjoy good health. Many suffer from incidents of acute exacerbation that requires hospitalization, followed by long episodes of recovery and rehabilitation for functional restoration. The geriatric care services in Singapore are wide and readily available, ensuring the…

Question 2 What are stem cells (what characteristics define them)? Stem cells are cells that has the potential to develop into different cell types in the body during early life and growth. They serve as an internal repair system , dividing essentially without limit to replenish other cells as long as the person is alive .When a stem cell divides it can either remain as a stem cell or can develop into a cell with more specialized function like muscle cell, red blood cell etc. Two…

Tissue macrophages are spread throughout the body and designated by specific name depending on the site of tissue occupation. These macrophages are called by different names like kupffer cells, alveolar cells, microglia, peritoneal macrophages, osteoblasts, langerhans cells when they are in liver, lungs, central nervous system, peritoneal cavity, bone and skin/mucosa, respectively. They act as scavenger cells collecting the damaged cells and cell debris. They also serve as first line of defense…