RAT 2 Study Guide

what are sutures

a fibrous joint structurally and a synarthrosis functionally that is found between the bones of the skull.

what do orbits contain

the eyeballs

what does the nasal cavity contain

houses the sensory receptors for smell

what does the oral cavity contain

surrounds the teeth and tongue

what are sinuses

bones that contain air-filled, membrane-lined spaces

what are paranasal sinuses

bones around the nasal cavity that are large sinuses

which bones contain paranasal sinuses (mnemonic device: for easier sinus memorization)

frontal bone, ethmoid bone, sphenoid bone, maxillary bones

what is the calvarium

the superior portion of the cranial cavity; also called the cranial vault

what are fontanels

a soft “spot” in the skull of a fetus and infant in which the cranial suture have not yet fused

what is unique about the hyoid bone

only bone in the human body does not connect or articulate directly with any other bone

why is the hyoid bone important in forensics

a broken hyoid bone can indicate strangulation

For atoms with five or fewer electrons, such atoms are most stable with only their first electron shell filled

Duet rule

what are two medical applications of isotopes

cancer radiation therapy and radiotracers

radiation from certain radioisotopes damages the structural features of cancer cells and interferes with their functions, killing them

cancer radiation therapy

____ are injected into a patient and the radiation they produce is detected by a camera and analyzed by a computer. the picture shows size, shape, and activity of certain organs

radiotracers