Module 2 Flashcards
Define homeostasis
state of equilibrium that is maintained in the body’s internal environment to support and sustain life
Define anatomical terminology
used to describe the human body
The term anatomy is created from
2 Greek words: ana meaning “apart” and tome meaning “to cut”
Atoms combine to make
molecules
Molecules combine to make
cells
Define cell
basic building block of the human body
Cells combine to form
tissues
Tissues combine to form
organs
Organs combine to form
different systems of the body
The body has how many tissue types
4, epithelial, connective, muscle and nervous
Define tissue
grouping of similar cells that work together to perform a specialized function
Define epithelial tissue
- forms the outer surfaces of the body and lines body cavities as well as tubes that lead to the exterior of the body
What are the functions of epithelial tissue?
protection, sensation, secretion, absorption, excretion, diffusion of gases, liquids & nutrients
How does epithelial tissue protect the skin?
via the skin forming a physical barrier over underlying tissue
Where does epithelial tissue form cells?
skin, eyes, ear, nose and tongue
to help the body interpret sensory stimuli
What does epithelial tissue secrete?
hormones, enzymes and lubricating fluids from various glands
What are the functions of connective tissue?
builds the support for the body’s organs and muscle sheaths
connects muscles to bones and bones to joints
most abundant tissue in the body
How many muscle tissues are there?
3: skeletal, smooth and cardiac
What are the functions of skeletal tissue?
for movement and posture
voluntarily controlled
Where is smooth muscle found?
esophagus, stomach, intestine and bladder
involuntary muscle, controlled by autonomic nervous system
Define cardiac muscle
found in the heart
involuntary muscle, controlled by autonomic nervous system
What are the functions of nervous tissue?
to communicate through out the body
are excitable & can conduct electricity
coordinate and control the functions of the body
What are organs?
structures in the body that perform specific purposes
EX: heart, liver, kidneys, brain, skin
What are Systems?
groups of different organs functioning together for a common purpose
Define anatomical position
the position in which the body is standing upright, head facing forward and arms extended by the side of the body with palms oriented to the front
What are body planes?
body is divided into imaginary sections
Define sagittal plane
vertically into right & left sections
Define midsagittal plane
equal left & right halves at midline
Define transverse or horizontal plane
superior and inferior sections
Define coronal or frontal plan
anterior & posterior sections
at the right angle to the midsagittal plane
Define directional terms
describe the location of a body part in relation to another body part
Define superior
above
in an upward direction
toward the head
Define inferior
Combining Form: infer/o
below
in a downward direction
more toward the feet
Define anterior
Combining Form: anter/o
in front of
before
the front side of the body
Define posterior
Combining Form: poster/o
toward the back
the backside of the body
Define cephalic
Combining Form: cephal/o
pertaining to the head
superior in the position
Define caudal
Combining Form: caud/o
pertaining to the tail
inferior in the position
Define Medial
Combining Form: Medi/o
nearest to the midline or middle