BIO 253 Exam 1 Questions with Verified
Correct Answers
Anatomy
-The study of body structure
Physiology
-The study of body function
Levels of organizations
1.) Subatomic particles ex: (Protons)
2.) Atom ex: (Hydrogen)
3.) Molecule ex: (Water)
4.) Macromolecule ex: (DNA, protein)
5.) Organelle ex: (Mitochondrion, lysosome)
6.) Cell ex: (Muscle, nerve, or blood cell)
7.) Tissue ex: (Adipose or epithelial)
8.) Organ ex: (Heart, kidney)
9.) Organ System ex: (digestive system)
10.) Organism ex: (human)
Receptor (homeostatic mechanism)
-Detects and provides information about the stimuli
Control center (homeostatic mechanism)
-Decision-maker that maintains the set point
Effector (homeostatic mechanism)
, -Muscle or gland that responds to the control center, and causes the necessary change in the
internal environment.
Negative feedback
-Effectors return conditions toward normal range, and the deviation from set point lessens
Positive feedback
-The change/deviation is intensified, instead of reversed
Integumentary system
-Body covering, protection, body temperature regulation, sensory reception, production of
Vitamin D
Skeletal system
-Support and movement, framework, protection, attachment sites, storage of inorganic salts,
production of blood cells.
Muscular system
-Support and movement, main source of body heat, of posture
Nervous system
-Integration and coordination of organ function through nerve impulses and
neurotransmitters; rapid short-term effects
Endocrine system
-Integration and coordination of organ function through chemical messengers called
hormones; slower, longer-lasting effects.
Cardiovascular system
Correct Answers
Anatomy
-The study of body structure
Physiology
-The study of body function
Levels of organizations
1.) Subatomic particles ex: (Protons)
2.) Atom ex: (Hydrogen)
3.) Molecule ex: (Water)
4.) Macromolecule ex: (DNA, protein)
5.) Organelle ex: (Mitochondrion, lysosome)
6.) Cell ex: (Muscle, nerve, or blood cell)
7.) Tissue ex: (Adipose or epithelial)
8.) Organ ex: (Heart, kidney)
9.) Organ System ex: (digestive system)
10.) Organism ex: (human)
Receptor (homeostatic mechanism)
-Detects and provides information about the stimuli
Control center (homeostatic mechanism)
-Decision-maker that maintains the set point
Effector (homeostatic mechanism)
, -Muscle or gland that responds to the control center, and causes the necessary change in the
internal environment.
Negative feedback
-Effectors return conditions toward normal range, and the deviation from set point lessens
Positive feedback
-The change/deviation is intensified, instead of reversed
Integumentary system
-Body covering, protection, body temperature regulation, sensory reception, production of
Vitamin D
Skeletal system
-Support and movement, framework, protection, attachment sites, storage of inorganic salts,
production of blood cells.
Muscular system
-Support and movement, main source of body heat, of posture
Nervous system
-Integration and coordination of organ function through nerve impulses and
neurotransmitters; rapid short-term effects
Endocrine system
-Integration and coordination of organ function through chemical messengers called
hormones; slower, longer-lasting effects.
Cardiovascular system
