Answer:
Sperm washing is the process in which individual sperms are separated from the semen. Washed sperm is used in artificial insemination using the intrauterine insemination (IUI) technique and in in vitro fertilization (IVF). It may also be used to decrease the risk of HIV transmission by an HIV-positive male, in which case the washed sperm is injected into a female using an artificial insemination technique.
Sperm washing involves removing any mucus and non-motile sperm in the semen to improve the chances of fertilization and to extract certain disease-carrying material in the semen. Sperm washing is a standard procedure in infertility treatment.
Explanation:
Sperm washing takes place in a laboratory following sperm donation.
Sperm may be washed by density gradient centrifugation or by a "direct swim-up" technique that does not involve centrifugation. In normal semen samples, centrifugation causes no more DNA damage to spermatozoa than a direct swim-up technique.[1]
Washed sperm is concentrated in Hams F10 media without L-glutamine, warmed to 37 °C (99 °F).[2] A chemical known as a cryoprotectant is added to the sperm to aid the freezing and thawing process.[3] Further chemicals may be added which separate the most active sperm in the sample, as well as extend or dilute the sample so that vials for a number of inseminations are produced.
Bones contain three components that in itself make it strong and flexible. They are collagen, calcium phosphate, and living bone cells. Collagen gives bones their structure, calcium makes bones strong, and cells generate more bone cells to fill up weakened parts. Calcium intake from food supplements and milk are also good for the bones because it can strengthen them more and make the skeletal system protected from bone irregularities and problems while growing. Vitamin D is essential for the absorption of calcium in bones. In order to offer support to the muscles and tissues of the body, bone growth is very crucial, because a weak bone cannot make the body function well.
<span> important because people have many different ways of connecting spirituality and relating this spirituality to personal wellbeing</span>
Answer:
In the visual system, the convergence of information is due to the fact that each cell of the retinal ganglion cell can demonstrate that information it sends to the brain comes from many photoreceptors (option B).
Explanation:
The retina is a structure formed by photoreceptors, called cones and rods. The photoreceptors attached to each retinal ganglion cell can form its visual reception field, while the group of ganglion cells that reach a specific area of the brain form the brain cell reception field.
In the visual system, convergence occurs because the receptive field of several photoreceptors reaches a retinal ganglion cell, and a group of ganglion cells reaches a brain cell to form its receptive field, so the<u> information that retinal ganglion cell sends to the brain comes from many photoreceptors</u>.
The other options are not correct because convergence:
<em> A. It does not depend on all the information seen in the visual field.
</em>
<em> C. It does not depend on the sum of the amount of light it receives.
</em>
<em> D. It does not imply the amount of action potentials.
</em>
<em> E. There are no connections with other ganglion cells.</em>
Answer:
- The total number of people living in a particular place at a particular time is called population.
- environment is a a process that allows individuals to explore environmental issues, engage in problem solving and take action to improve environment where they residue.
- developments is is defined as the the capacity e of a a state to increase its human resource with the the aim of of achieving higher outcome of of production for the the satisfaction off the basic needs of majority of its citizens and empowering them to make demands on the government.
Explanation:
interrelationship between population, environment and development .
the relation of population education with other subject is considered as the scope of population education. population is a multidimensional discipline. kids subject matter is found to be different in accordance with social, political and economic situation.
environment is a process that allows individuals to explore environmental issues,engage in problem solving and take action to improve environment where there residue. there are many scopes of environmental education they are physical aspect, biological aspect, socio economic aspect and Civic and anthropological aspect.etc.
development is defined as the capacity of a state to increase its human resources with the aim of achieving higher outcomes of production for the satisfaction of the basic needs of majority of its citizen and empowering them to make demands of the government. there are also aspect of development they are human resource, physical aspect, social aspects, economic aspects.
