GRCC BI 121 Lec Unit 1 review Questions
and Answers 100% Solved
Endocrine system Control metabolic activities, includes glands that secrete hormones.
EX: Pituitary, thyroid, adrenal, parathyroid, ovaries, testes, pancreas
Cardiovascular system Move blood through blood vessels, transport substances
throughout body. EX heart, arteries, veins, and capillaries
Lymphatic system Return tissue fluid to blood, carry certain absorbed food molecules,
defend against infection and disease. EX: Lymphatic vessels, lymph nodes, thymus, spleen
Digestive system Receive, breakdown, and absorb food, eliminate unabsorbed material.
EX Mouth, teeth, esophagus, stomach, salivary glands, intestine, and liver.
rESPIRATORY SYSTEM Intake and output of air, exchange of gasses between air and
blood. EX: Nasal cavity, pharynx, trachea, bronchi, lungs
,Urinary system Removes waste from blood, maintain H2O and electrolyte balance, store
and transport urine, control pH. EX: Kidneys, ureters, urinary bladder, urethra
Reproductive system(Male) Produce and maintain sperm cells, transfer sperm cells to
female reproductive tract. EX: Scrotum, testes, urethra, penis
Reproductive system(Female) Produce and maintain egg cells, receive sperm cells,
support development of embryo and function in birth process. EX: Ovaries, uterus, vagina
Homeostasis A tendency to maintain a balanced or constant internal state; the regulation
of any aspect of body chemistry, such as blood glucose, around a particular level
Homeostatic regulation physiological adjustment to preserve homeostasis in variable
environments
Receptor senses environment change
Control center processes information from receptor and sends out commands
, Set point in the control center, optimal range
Effector Responds to commands opposing stimulus
Negative feedback A type of regulation that responds to a change in conditions by
initiating responses that will counteract the change.
Positive feedback A type of regulation that responds to a change in conditions by
initiating responses that will amplify the change.
Octet rule States that atoms lose, gain or share electrons in order to acquire a full set of
eight valence electrons
Hydrogen bond Attraction between a slightly positive hydrogen atom and a slightly
negative atom.
Metabolism All cellular reaction of the body at a given moment
and Answers 100% Solved
Endocrine system Control metabolic activities, includes glands that secrete hormones.
EX: Pituitary, thyroid, adrenal, parathyroid, ovaries, testes, pancreas
Cardiovascular system Move blood through blood vessels, transport substances
throughout body. EX heart, arteries, veins, and capillaries
Lymphatic system Return tissue fluid to blood, carry certain absorbed food molecules,
defend against infection and disease. EX: Lymphatic vessels, lymph nodes, thymus, spleen
Digestive system Receive, breakdown, and absorb food, eliminate unabsorbed material.
EX Mouth, teeth, esophagus, stomach, salivary glands, intestine, and liver.
rESPIRATORY SYSTEM Intake and output of air, exchange of gasses between air and
blood. EX: Nasal cavity, pharynx, trachea, bronchi, lungs
,Urinary system Removes waste from blood, maintain H2O and electrolyte balance, store
and transport urine, control pH. EX: Kidneys, ureters, urinary bladder, urethra
Reproductive system(Male) Produce and maintain sperm cells, transfer sperm cells to
female reproductive tract. EX: Scrotum, testes, urethra, penis
Reproductive system(Female) Produce and maintain egg cells, receive sperm cells,
support development of embryo and function in birth process. EX: Ovaries, uterus, vagina
Homeostasis A tendency to maintain a balanced or constant internal state; the regulation
of any aspect of body chemistry, such as blood glucose, around a particular level
Homeostatic regulation physiological adjustment to preserve homeostasis in variable
environments
Receptor senses environment change
Control center processes information from receptor and sends out commands
, Set point in the control center, optimal range
Effector Responds to commands opposing stimulus
Negative feedback A type of regulation that responds to a change in conditions by
initiating responses that will counteract the change.
Positive feedback A type of regulation that responds to a change in conditions by
initiating responses that will amplify the change.
Octet rule States that atoms lose, gain or share electrons in order to acquire a full set of
eight valence electrons
Hydrogen bond Attraction between a slightly positive hydrogen atom and a slightly
negative atom.
Metabolism All cellular reaction of the body at a given moment
