Lt Lessons 1 & 2 Flashcards
(51 cards)
atom
the basic unit of a chemical element
molecule
a group of 2 or more atoms bonded together
organelle
variety of small units that perform 1 or more specific jobs that help the cell function
cell
the smallest unit if of a living organism that can include other single celled organisms
tissue
group of several similar cells that work together to make something function
organ
an atomic structure that has 2 or more tissue types that perform 1 or more particular functions
organ system
a group of organs that perform major functions together to meet physiological needs
organism
an individual animal, plant, or single-cell life form
atom, molecule, organelle, cell, tissue, organ, organ system, organism
list the organization levels of the human body in order from smallest to largest:
tissue; organelle; atom; organ; organism; organ system; cell; molecule
they all have similar units that work together to perform a particular function
what is the major similarity in tissues, organs, and organ systems?
superior
describes a position above or higher than another part of the body
ex: the ears are ___ to the mouth.
inferior
describes a position below or lower than another part of the body.
ex: the abdomen is ____ to the nose.
medial
describes the middle or direction towards the middle of the body
ex: the nose is ____ to the ears.
lateral
describes the side or direction toward the side of the body
ex: the ears are ____ to the nose.
superficial
describes a position closer to the surface of the body
ex: the skin is ___ to the bones.
deep
describes a position farther from the surface of the body
ex: the lungs are ___ to the rib cage.
anterior
describes the front or direction toward the front of the body
ex: the sternum is ___ to the heart.
posterior
describes the back or direction toward the back of the body
ex: the spine is ____ to the liver.
proximal
describes a position in a limb that is nearer to the point of attachment or the trunk of the body
ex: the elbow is ___ to the wrist.
distal
describes a position in a limb that is farther from the point of attachment or the trunk of the body
ex: the foot is ___ to the knee.
ipsilateral
describes structures found on opposite sides of the body (right side v left side)
ex: the right ankle is ___ to the right ear.
contralateral
describes structures found on opposite sides of the body (right side v left side)
ex: the right eye is ____ to the left elbow.
midsagittal (median) section
the sagittal plane that divides the body or an organ into equal right & left halves
- direct and vertical slice down the middle of the body
frontal (coronal) section
atomical plane that passes through the body/organ from left to right, and superior to interior.
- also called a coronal plane
- direct and horizontal slice through the entire body
