A&P Mastering A&P Chap 1, 2

in which body cavities are the lungs located?

pleural, ventral, and thoracic

which organic molecules form the major structural materials of the body?

proteins

in a homeostatic control mechanism, which component monitors the environment?

receptor

what is the primary energy-transferring molecule in cells?

ATP

which of the following is an example of a decomposition reaction?

MgO2 → Mg + O2

water is an important molecule because it __________

can form hydrogen bonds

which four elements comprise approximately 96% of our body weight?

carbon, oxygen, hydrogen, nitrogen

the serous membrane is a double-layered membrane created by two separate membranes

false

which of the following is NOT one of the three major types of chemical reactions?

hyperbolic

which of the following best defines anatomy?

it is the study of the structure of body parts and their relationships with one another

which organ systems function as control systems, communicating with other cells and organs to regulate their activities?

nervous and endocrine systems

which of the following is not a fundamental subatomic particle that forms elements?

nucleus

a structure that is composed of two or more tissue types that work together to perform specific functions for the body is a(n) ________

organ

With regards to a set point or normal limit, negative feedback always __________ a physiological value to the set point or normal limit.

returns

one of the functional characteristics of life is excitability or responsiveness. this refers to ________

sensing changes in the environment and then reacting or responding to them

which directional term is used to describe the relationship of the skin to the skeletal muscles?

superficial

which of the following is a FALSE statement about carbohydrates?

the chemical composition of carbohydrates includes two oxygens and one hydrogen for every carbon present

which of the following statements regarding atoms is true?

the reactivity of an atom is based on the number of electrons in its outer valance shell

which of the following represents the correct order in which the components interact in a homeostatic control system?

the receptor, the control center, the effector

the major function of DNA is to provide the genetic instructions for protein synthesis?

true