chapter 1 & 2 Flashcards
chapter 1 questions
is defined as the study of the structure of a living organism and the relationship of its parts.
Anatomy
is defined as the study of the function of a living organism and its parts.
Physiology
at what level the organization of the body begins?
Chemical
a hypothesis that has gained a high level of confidence is called a
Theory & Law
the reference position of the body when it is in an erect, or standing, posture with the arms at the sides and palms turned forward is called the…….
Anatomical position
the two major cavityies are called the…..
ventral and dorsal cavities
the space that encloses the brain and the spinal cord forms one continuous cavity called the…….
Dorsal cavitiy
the midline plane that divides the body into right and left halves is the…..
midsagittal plane
the plane that divides the body into front and back portions is the…….
coronal plane
the chest region of the body is called the…..
thorax
the abdominopelvic cavity is subdivided into the…
Abdominal and pelvic cavities
Superior means
toward the head
the relatively constat state maintained by the body is known as
Homeostasis
most homeostatic control lops in the body involves
negative feedback
instead of opposing a change in the internal enviroment, which type of feedback loop temporarily amplifies the change that is occuring?
positive feedback loop
anything that occupies space and has mass is called
Matter
a pure substance that is composed of only one of more than a hundred types of atoms is called a(n)
Element
a chemical bond formed by the sharing of one or more pairs of electrons between the outers shells of two atoms is called a(n)…..
Covalent bond
molecules that form ions when dissolved in the water are called….
electrolytes
release hydrogen ions.
Acids
as the concentration of hydrogen ions increases, th pH goes…..
down and the solution becomes more acidic
maintian pH balance
Buffers
the carbon-containing molecules formed by living things are often called….
Organic molecules
Each enzynme “fits” the specific molecules it works on. this eplanation is often referred to as the
Lock and Key Model
the most important monosaccharide is
Glucose
An example of a polysaccharide is
Glycogen
Proteins are large molecules composed of…
Amino acids
Fat, Steroid, and Cholesterol are….
Lipid
Avery large molecule composed of subunits of sugar, nitrogen base, and a phosphate bond is a …
Nucleic acid
DNA and RNA are important because
They are the “Master Code” of life
