Histology- special senses

tissue type

respiratory epithelium, aka pseudostratified columnar epithelium

tissue type

sero-mucous glands of the lungs

layer

lamina propria

the layer of connective tissue that is under respiratory epithelium’s basement membrane

made of loose irregular CT

layer

basement membrane

supports respiratory epi

structure

terminal bronchiole-

conducting airway, has simple columnarepi

structure

primary bronchiole-

notice the bronchial cartilage

tissue type/structure

bronchiole cartilage-

found next to primary bronchi (just branched off of trachea)

structure

alveoli-

blind ending sacs, location of gas exchange within lungs

structure

alveolar sacs- spherical-like spaces where multiple alveoli connect to

structure

alveolar duct-

arise from bronchioles and are passageways lined with alveoli

tissue type

type 1- simple squamous epi

gas exchange occurs here

tissue type

alveolar type 2 cells-

secrete surfactant

tissue type (on epiglottis)

respiratory epithelium

tissue type/layer?

lamina propria-

supporting respiratory epi

tissue type

elastic cartilage-

provides support to epiglottis

structure

trachea

structure

cilia of respiratory epithelium

structure

tracheal cartilage-

made of hyaline cartilage, is open on the posterior aspect to allow the esophagus to expand

tissue type

stratified squamous epi, non-keratinized

structure

filiform papillae-

“flam-like”, serve to move food on the tongue

do not contain taste buds

structure

circumvallate papillae-

8-12 dome shaped structures in a V shape on tongue

largest in size and smallest in number papillae on the tongue

structure

furrow-

“moat” around circumvallate papillae, which receives saliva from minor salivary glands

structure

taste buds-

found on the “side” of the moats, contain cells with taste receptors

structure

taste pore

structure

mucous salivary gland

structure

serous salivary gland

structure

foliate papillae-

parallel ridges on the lateral tongue, separated by deep moats

area

aqueous chamber of the eye

area

vitreous chamber of the eye

sclera

cornea

structure

ciliary body

structure

iris

layer

retina- (see the pigment epi and rods/cones?

structure

optic disc- where there are to photoreceptor cells, “blind spot” where the axons of the neurons become the optic nerve and leave the eye

structure

lens

structure

conjunctiva-

the mucous membrane covering the anterior sclera

cell type

photoreceptor cells-

rods and cones, part of the retinal layer

cell type

cones

cell type

rods

structure

axons that receive signals from rods and cones, lead to the optic nerve

structure (look at photoreceptor cells

macula lutea-

area of the retina that has mostly cone cells

structure

cochlea of the inner ear- detects sound vibration

structure

vestibular apparatus- detects gravity/static position, and acceleration

structure

crista ampullaris- the sensory region of the semi-circular canals

structure

cupula- of the inner ear

structure

hair cells

structure

scala media

structure

scala vestibuli- the “first” part of the cochliea→ (vestibule)

notice the lame skinny layer of tissue dividing this and the scala media

structure

scala tympani- the lower compartment- notice the complicated membrane between this and the scala media→ this is used to transmit hearing info

structure

semi-circular canals-

sense linear/directional acceleration

structure

utricule/saccule- impossible to say in this histology slide/one dimention

deal with sensing static position/gravity

structure

techtorial membrane

structure

hair cells