Final Exam Review Flashcards
Maintenance of the internal condition, regardless of external condition is?
Homeostasis
The study of tissues?
Histology
Homeostatic mechanisms employ what type of feedback?
Negative feedback, positive feedback is extremely rare.
Which branch of biology studies how the structures of the various parts of the body perform their functions?
Physiology
Which of the following represents 6.02 x 10^23 molecule?
A mole.
Which term describes the position of the ear relative to the nose?
The ear is lateral to the nose.
Which term describes the position of the knee relative to the ankle?
Proximal
The abdominal cavity relative to the thoracic cavity?
Inferior
Which statement is correct?
A solute is the substance that is being dissolved by the solvent, the resulting combination being a solution.
Which type of section ?? do anterior and posterior views go by?
Frontal or coronal.
Which body cavity contains the stomach?
Abdominal cavity.
In a system under homeostatic control, which component monitors the variable?
Receptor
Which organ is in the cranial cavity?
The brain
The reason the body has skin and each cell a plasma membrane?
Maintaining boundaries
The breakdown of ingested food?
Digestion
Atoms of the same element, but different atomic weights are called?
Isotopes
This system returns fluid that has leaked into tissues, back into circulation and it is involved in immunity.
Lymphatic system.
Which system releases chemical messengers known as hormones?
Endocrine system
Who is credited with putting a number to the number of molecules in a mole?
Amedeo Avogadro
What is the mass of the proton?
1 amu
Where in an atom are neutrons found?
In the nucleus.
What is the electrical charge on an electron?
Negative
What is the basic unit of life?
The cell
What type of cell creates new bone?
Osteoblast
A drug is administrated to your patient, the half-time for the substance is 4 hours. How long will it take for the levels of the drug to reach 12.5% of its initial …??
12
Which states are fluid?
Gas and liquid
The body’s internal distribution center which moves material around inside the body is called?
Cardiovascular System
The sum total of all chemical reactions that occur in the body’s cells is…
metabolism
The ability to sense and react to stimuli is…
responsiveness
Carbon has an atomic number of 6, what does this mean?
It has 6 protons.
Atomic number equals what?
The number of protons in the nucleus.
How much does a proton weigh?
1 amu
Both carbons have an atomic mass of 12, but one isotope has a mass of 14, how many neutrons does the atom of 14 have?
14 - the 6 protons =
8 neutrons
The atomic number of carbon is 6, how many electrons does carbon have?
6
After 3 half-lives what percent of the total starting weight of an isotope would remain?
12 and a half.
Which element accounts for most of the mass of the human body?
Oxygen from H2O.
Which methods are medications cleared from the body?
They are metabolized by cells, filtered out by kidneys, or converted to other substances by the liver.
Which element on this list has the strongest attraction for electrons?
Oxygen.
Atoms of equal electronegativity will…
Share the electrons equally; covalent bond.
Which subatomic particles are involved in chemical bonding?
Electrons.
A fluid in which molecules are moving too fast to be attached to each other is known as?
A gas
An atom or molecule that holds positive or negative charge is called…
An ion.
Which end of a water molecule has a partial positive charge?
Oxygen side
Which end of a water molecule has a partial positive charge?
Hydrogen side
