The Human Organism Flashcards
The study of the structure and function of the
human body
Anatomy and Physiology
The scientific discipline that investigates the
structure of the body; its relationship and
its functions.
Anatomy
to dissect the parts of the body
for study
Anatomy
2 Basic Approaches to the Study of Anatomy
Systemic or Systematic Anatomy
Regional Anatomy
study of the body
systems
Systemic or Systematic Anatomy
study of the organization
of the body areas within each region
Regional Anatomy
2 Types to Examine Internal Structures Of A Living Person
Surface Anatomy
Anatomical Imaging
the study of external
features
Surface anatomy
involves the use of
x-rays, ultrasound, magnetic resonance
(MRI), etc. to create pictures of internal
structures
Anatomical imaging
scientific discipline that deals with the
processes/functions of living things
Physiology
Major Goals for Studying Physiology
1) To understand and predict the body’s
responses to stimuli
2) To understand how the body maintains
internal conditions within a narrow range of
values in the presence of continually
changing internal and external
environments
6 Levels of the Structural and Functional Organization of the Human Body
- Chemical Level
- Cell Level
- Tissue Level
- Organ Level
- Organ System Level
- Organism Level
involves how atoms (e.g.,
hydrogen and carbon) interact and combine into
molecules
Chemical Level
basic structural and
functional units of organisms
Cells
Molecules combine to form
Organelles
small
structures that make up some cells
Organelles
a group of similar cells and
the materials surrounding them
Tissue
composed of two or
more tissue types that together perform one or
more common functions
Organ
a group
of organs classified as a unit because of a common
function or set of functions
Organ System
any living thing
considered as a whole, whether composed of one
cell (bacteria) or trillions of cells (human)
Organism
13 Major Organs
- Brain
- Lungs
- Heart
- Liver
- Pancreas
- Spleen
- Stomach
- Gallbladder
- Kidneys
- Large Intestine
- Small Intestine
- Urinary Bladder
- Urethra
12 Major Body Systems
- Integumentary system
- Muscular system
- Skeletal system
- Nervous system
- Endocrine system
- Cardiovascular system
- Lymphatic system
- Respiratory system
- Digestive system
- Urinary system
- Female reproductive system
- Male reproductive system
body’s outer layer and acts as a physical
barrier, the first line of defense against
bacteria and injury
Integumentary system
- body’s support structure
- allows body
movements, produces blood cells, and
stores minerals and adipose tissue - consists of bones,cartilage, ligaments, joints
Skeletal system
- Produces body movements, maintains
posture, and produces body heat. - Consists of muscles attached to the
skeleton by tendons
Muscular system
- A major regulatory system that detects
sensations and controls movements,
physiological processes, and intellectual
functions. - Consists of the brain, spinal cord,
nerves, and sensory receptors
Nervous system
- A major regulatory system that influences
metabolism, growth, reproduction, and
many other functions. - Consists of endocrine glands
Endocrine system
- Transports nutrients, waste products, gases,
and hormones throughout the body; plays a
role in the immune response and the
regulation of body temperature. - Consists of the heart, blood vessels,
and blood
Cardiovascular system
- Removes foreign substances from the blood
and lymph, combats disease, maintains
tissue fluid balance, and absorbs dietary fats
from the digestive tract. - Consists of the lymphatic vessels,
lymph nodes, and other lymphatic organs
Lymphatic system
- Exchanges oxygen and carbon dioxide
between the blood and air and regulates
blood pH - lungs and respiratory passage
Respiratory System
- Performs the mechanical and chemical
processes of digestion, absorption of
nutrients, and elimination of wastes. - Consists of the mouth, esophagus,
stomach, intestines, and accessory organs
Digestive System
- Removes waste products from the blood
and regulates blood pH, ion balance, and
water balance. - Consists of the kidneys, urinary
bladder, and ureters
Urinary system
- Produces oocytes
- site of
fertilization and fetal development - produces
hormones that influence sexual function
and behaviors - Consists of the ovaries, uterine
tubes, uterus, vagina, mammary glands, and
associated structures
Female reproductive system
- Produces and transfers sperm cells to the
female and produces hormones that
influence sexual functions and behaviors. - Consists of the testes, accessory
structures, ducts, and penis
Male Reproductive System
6 characteristics of life
- Organization
- Metabolism
- Responsiveness
- Growth
- Development
- Reproduction
The specific
relationship of the many individual parts of
an organism, interacting and working
together
Organization
ability to use energy and
perform vital functions
Metabolism
ability of an organism to
sense changes in the environment and
make adjustments that help maintain its
life
Responsiveness
an increase in size of all
or part of the organism
Growth
changes an organism
undergoes through time (involves growth and differentiation)
Development
change in cell
structure and function from generalized to specialized
Differentiation
formation of new cells or
new organisms
Reproduction
- the maintenance of a variable,
such as body temperature, around an ideal normal
value, or set point - constant internal environment
Homeostasis