Chapter #1 Introduction
Used to investigate the human body, ____________ tests a hypothesis, then rejects or accepts it based on the results of experiments or observations.
What is the scientific method?
Tissues are organized into ____________
What are organs?
Where a particular value should be.
What is set point?
These cells transmit electrical signals throughout the body.
What are neurons?
This gland, located in the neck, regulates metabolism.
What is the thyroid gland?
Concerns the functions of the body parts-what they do and how they
What is physiology?
Are traits all organisms share.
What are characteristics of life?
Requirements of organisms are:
What is water, food, oxygen, heat and pressure?
This organ is the control center of the nervous system
What is the brain?
This gland produces insulin to regulate blood sugar levels.
What is the pancreas?
Small molecules can combine in complex ways to form larger _________
What are macromolecules?
Acquisition and use of energy constitute ________.
What is metabolism?
The body maintains homeostasis through several self-regulating control systems, that share three components:
what are receptors, set point, effectors?
This part of the nervous system controls involuntary actions like heartbeat and digestion.
What is the autonomic nervous system?
These glands sit atop the kidneys and produce hormones like adrenaline.
What are the adrenal glands?
Is composed of atoms.
What is matter?
Homeostatic mechanisms act through
What is negative feedback?
It usually produces unstable conditions, which might seem incompatible with homeostasis.
What is positive feedback mechanism?
This part of the brain is responsible for balance and coordination.
What is the cerebellum?
This gland is known as the "master gland" because it controls other endocrine glands.
What is the pituitary gland?
Maintenance of a stable internal environment is called
What is homeostasis?
Characteristics of life include:
What is movement, responsiveness, growth, reproduction, respiration, digestion, absorption, circulation, assimilation, and excretion?
A homeostatic mechanism works as follows: if the receptors measure deviations from a set point, effectors are activated that can return conditions toward normal. This is called ________________
What is negative feedback?
This protective covering surrounds the brain and spinal cord.
What are the meninges?
This hormone, produced by the pineal gland, regulates sleep-wake cycles.
What is melatonin?