Science
Permiable
Permeable allow some substances to go through the cell membrane
impermeable does not allow anything to go through the cell membrane
selectivly allows some substances to pass trough
Diffusion
Definition of diffusion The movement of particles from an area of higher concentration to an area of lower concentration until they reach EQuilibrium ( till they are spread out)
ex. blow dryer, fart, perfume
Concentration Gradient
concentration gradient, goes high to low (down) concentration gradient
Concentration gradient a difference in substance between two areas
Definition of osmosis
The diffusion of water across a selectively permeable membrane from an area of higher water concentration (low solute concentration) to an area of lower concentration (higher solute concentration)
Turgor pressure
Large central vacuole that is filled with water
Outward pressure on the cell wall of a plant cell is called turgor pressure
Nutrients become dissolved in water in the soil
Fertilizers must be applied in small amounts
Maintaining healthy body systems pt. 1
Traditional health practices are based on the wisdom and experience of a culture and its knowledge holders in diverse communities.
Maintaining healthy body systems pt.2
Wisdom is taught and passed on generations
Most people rely on conventional healthcare practices.
Sage
one of four sacred medicine plants
indigenous use in everyday life,
Many traditions and protocols for burning sage
Cleansing the body
Qi gong
is a practice deep roots in chinese medicine, philosophy and martial arts
The word pronounced “Qi”thanslates to life energy
The movements involve deep rhythmic breathing
People do it for exercise, relaxation, self-healing, and preventive medicine.
Yoga
the practice of yoga —- began as part of an approach to health care known as Ayurveda
Ayurveda was practiced in india and is a system of health care that treats the body
The words “Ayu” and “Veda” mean life and knowledge
Vaccines
help protect the body from infection
After being vaccinated, the immune system recognizes it and immediately begins to defend the body against it.
pathogen (a harmful organism that we often refer to as a germ)
Antibiotics
used to treat bacterial infections
Antibiotics are substances that fight infections caused by bacteria.
They either kill bacteria or prevent them from growing or reproducing.
Surgerys
can help treat injuries and medical conditions
Surgical procedure is done to improve the body's function
Mind and body emotions pt.1
An individual’s wellness depends on how effectively the mind, body, emotions, and spirit function together as a cohesive whole.
Mind and body emotions pt.2
Psychology is a branch of mental health care that deals with the ways in which our thinking, behavior, and emotions are interconnected and can affect the body.
Biomaterials def.
Biomaterials engineers design and build materials and structures that can be used in the human body. These technologies can improve human health in many ways:
Biomaterials do.
Stents are little tubes that prop open blood vessels,
Artificial organs or bones can replace real ones that are damaged,
Fabrics or meshes are used to patch tears inside the body.,
Tiny nanocarriers are being tested as a way to deliver medicines to body cells.
Tissue culture
layers of cells are grown in glass or plastic containers
Xenotransplantation
Pigs may be the solution to organ transplants
Most importantly, scientists can change pig cells genetically so that a human body will not recognize pig organs as foreign tissue.
Transplanting an organ from one species to another is called Xenotransplantation
The risk is transferring a animal disease to a patient then a patient can transfer it to someone else
We will not know if xenotransplantation is dangerous until experiments are done on humans
Phages
Biophage Pharma Inc., is developing a new treatment for superbugs using viruses called bacteriophages, or “phages.”
a phage uses its genetic material to make copies of itself.
new phages break out of the bacterial cell, killing it.
This method of fighting bacterial infections is useful because there are no side effects of the phages targeting only specific cells
Cord blood
Cord blood
Researchers have found that “cord blood” from umbilical cords can be an effective treatment for some types of leukemia
there is only a little blood in each umbilical cord, even this small quantity is often enough
Hospitals around the world collect umbilical cord after birth
The unit of cord blood is then available to be injected into the veins or bone marrow of a person with leukemia.
The doctors hope these new cells will replace the unhealthy bone marrow cells and turn them into healthy cells