Follow us On YouTube Follow us On FaceBook



or
Search Language
Browse
Medical Animations
Medical Animation Titles
Custom Legal Animations
Patient Health Articles
Most Recent Uploads
Body Systems/Regions
Anatomy & Physiology
Diseases & Conditions
Diagnostics & Surgery
Cells & Tissues
Cardiovascular System
Digestive System
Integumentary System
Nervous System
Reproductive System
Respiratory System
Back and Spine
Foot and Ankle
Head and Neck
Hip
Knee
Shoulder
Thorax
Medical Specialties
Cancer
Cardiology
Dentistry
Editorial
Neurology/Neurosurgery
Ob/Gyn
Orthopedics
Pediatrics
Account
Administrator Login

Biology: Chemistry in Biology: 11: pH - Medical Animation

 

This animation may only be used in support of a single legal proceeding and for no other purpose. Read our License Agreement for details. To license this image for other purposes, click here.

Ready to License?

Item #NSV16024 — Source #1

Order by phone: (800) 338-5954

Biology: Chemistry in Biology: 11: pH - Medical Animation
MEDICAL ANIMATION TRANSCRIPT: Now that we've discussed acids and bases, let's talk about pH. The H in pH stands for hydrogen. pH is a measure of the concentration of free hydrogen ions in a solution. It tells us whether the solute in a solution is an acid or a base. Sometimes a base is referred to as being alkaline. To measure how acidic or basic a substance is, scientists use the pH scale, numbered from 1 to 14. The pH scale is an inverse scale of the concentration of hydrogen ions in a solution. The more hydrogen ions it contains, the lower its pH number and the stronger an acid it is. In contrast, the more hydroxide ions a solution has, the higher its pH number and the more basic or alkaline it is. Water is pH-neutral because it contains equal numbers of hydrogen and hydroxide ions. So water is right in the middle of the scale at a neutral pH of seven. Each whole number on the pH scale represents an exponential difference in value. This means that each whole number decrease in pH represents a 10 times increase in hydrogen ion concentration. For example, coffee has a pH of 5. So from a pH of 7 to a pH of 5, there is 10x10 or a 100-fold increase in hydrogen ion concentration compared to neutral water. As you can see, coffee is 100 times more acidic than water. This also means that coffee is 100 times less alkaline than water because it has a 100-fold decrease in hydroxide ion concentration. Baking soda is an example of a base with a pH of nine. It has a 100-fold decrease in hydrogen ion concentration compared to neutral water. However, it also has a 100 fold increase in hydroxide ion concentration. So baking soda is a hundred times more basic or alkaline than water. To function properly, biological processes in the human body require fluids with a pH in the range of approximately 6.5 to 7.5. For example, the normal pH of blood is 7.4. If acids or bases in the blood lower or raise the pH too much, a person could become sick or die. One way the body controls pH is through the use of different buffers. Buffers are substances that neutralize other acids and bases in solutions such as blood to prevent dramatic swings in pH. In summary, pH is a measure of the concentration of free hydrogen ions in a solution. A pH scale is an inverse scale of hydrogen ion concentration from 1 to 14. If the hydrogen ion and hydroxide ion concentrations are the same, the solution is pH-neutral. A pH of seven on the pH scale is neutral. Pure water has a pH of seven. Acids have a pH of less than seven and bases have a pH of greater than seven. The closer to seven a solution is, the weaker the acid or base. The farther away from seven a solution is, the stronger the acid or base. A buffer is a weak acid or base that reacts with a strong acid or base to prevent large changes in pH.

YOU MAY ALSO WANT TO REVIEW THESE ITEMS:
Biology: Chemistry in Biology: 04: Chemical Compounds
Biology: Chemistry in Biology: 04: Chemical Compounds - NSV15015
Medical Animation
Add to my lightbox
Find More Like This
Biology: Chemistry in Biology: 16: Proteins
Biology: Chemistry in Biology: 16: Proteins - NSV16038
Medical Animation
Add to my lightbox
Find More Like This
Human Papillomavirus (HPV)
Human Papillomavirus (HPV) - ANH14143
Medical Animation
Add to my lightbox
Find More Like This
Biology: Genetics: 10: DNA and RNA - DNA Replication
Biology: Genetics: 10: DNA and RNA - DNA Replication - NSV16037
Medical Animation
Add to my lightbox
Find More Like This
Week 11 in Fetal Development - Developing Genitalia (Female)
Week 11 in Fetal Development - Developing Genitalia (Female) - 3DSAJ18157k
Medical Illustration
Add to my lightbox
Find More Like This
Week 11 in Fetal Development - Developing Genitalia (Male)
Week 11 in Fetal Development - Developing Genitalia (Male) - 3DSAJ18157l
Medical Illustration
Add to my lightbox
Find More Like This
What attorneys say about MLA and The Doe Report:
"Medical illustrations are essential during trial for any medical malpractice case. The people at MLA have the uncanny ability of creating medical illustrations that simplify the most complex of medical concepts and human anatomy to a lay audience. The exhibits of MLA allow experts to easily describe complex concepts and human anatomy in a manner that could not be done otherwise.

In addition, their custom illustrations show in great detail the extent of injuries suffered and the devastating effects they have had on the client's anatomy. These custom illustration can show, side by side, the body before and after a catastrophic injury. The effect of this juxtaposition is unmatched by any testimony that can be adduced at the time of trial.

Even jurors after trial have commented on the ease with which they grasp medical concepts and anatomy once the MLA exhibits were introduced and used by my experts. Even judges who have "seen it all" are thoroughly impressed by the detail and sophistication of the illustrations.

I would not want to try a case without them."

Lambros Y. Lambrou
McHUGH & LAMBROU, LLP
New York, NY

"We are extremely pleased with the quality of the medical exhibits and the timely manner in which they were provided. I will certainly recommend your company to my business associates who could benefit from your services. Please tell Brian Wilson [Director of Content Development, Senior Medical Illustrator] that he did an exceptional job on these exhibits."

K. Henderson
Dunaway and Associates
Anderson, SC

"You and your company are wonderful. Your service, turnaround time, quality and price were better than I could have asked for. Please add me to your long list of satisfied customers."

Robert F. Linton, Jr.
Linton & Hirshman
Cleveland, OH

"Medical Legal Art wins our firm's highest accolades for professionalism and exhibit quality. In fact, many of the doctors I work with request color copies of your outstanding artwork to show to patients during the informed consent process."

Jeanne Dolan, BSRN, AlNC
Legal Nurse Consultant
Golden Valley, MN













Awards | Resources | Articles | Become an Affiliate | Free Medical Images | Pregnancy Videos
Credits | Jobs | Help | Medical Legal Blog | Find a Lawyer | Hospital Marketing