Histology Of CAR Flashcards
In the respiratory tract, what is the air conducting portion made of
Epithelial lining +surrounding support tissues(cartilage, smooth muscle,elastic fibres)
In the respiratory tract, what is the respiratory portion made from
Simple squamous epithelia +scant (!) loose connectivetissue
What structures make up the upper respiratory tract
Nasal cavities
Nasopharynx
Larynx
Trachea
Bronchi
Bronchioles
What structure make up the lower respiratory tract
Respiratory bronchioles
Alveolar ducts
Alveolar sacs
Alveoli
What epithelium are in the cutaneous region (nasal vestibule)
Stratified squamous epithelium
What is the respiratory region epithelium
Ciliated, pseudostratified columnar epithelium(Respiratory epithelium)
What epithelium, does the olfactory nerve region have
Olfactory epithelium
What is the function of the nasopharynx
Connects the nasal cavities to the larynx
What epithelium does the nasopharynx have
Mostly respiratory epithelium
What is the function of the larynx
The passageway between oropharynx and trachea
The organ to produce sounds
What epithelium does the larynx have
Respiratory epithelium
What epithelium does the alveoli contain
Simple squamous
What epithelium do the bronchioles contain
Simple cuboidar
What are the two types of alveoli epithelium
Type 1- very thin squamous cell (95%)
Type 2- cuboidal cell, secretes surfactant
What are the 4 layers of the trachea
Mucosa
Submucosa
Cartilaginous layer
Adventitia
What is the walls of the bronchus like
Same as trachea with extra smooth muscle between mucuosa and submucosa
What are the three layers of the heart wall
Endocardium
Myocardium
Epicardium
Pericardium
What does the endocardium do
Lines the ventricles/atria and covers the cardiac valves
What does the myocardium level of the heart do
Cardiac muscle cells (myocytes), embedded in a well-vascularized connective tissue framework
What does the epicardium do
Layer of mesothelium resting on elastic fibre-rich connective tissue, which is often rich in adipocytes
What does the pericardium do
Fibroelastic sac that surrounds the heart;
Do cardiac muscle have nuclei
Yes
Usually only 1
What are the muscle fibres in cardiac muscle like
Small
Branching
What is microvasculature and some examples
Vascular structures not visible with the naked eye
Arterioles (small arteries), metarterioles, capillaries, venules (small veins), and arteriovenous anastomoses
What are macrovasculature structures and some examples
Visible with naked eye
Elastic (large) and muscular (medium) arteries and veins (large and medium)
What are the size of neutrophils
12-15um
What is a band neutrophil like
A young neutrophil
Lacks the segmentation of the nucleus
What is the structure of basophils and eosinophils like
Both are 12-20um
Lobulated nucleus
What colour are the granules in basophils
Blue
What colour are eosinophils granules
Orange- red
What are monocytes like
15-20 um
Irregular shaped nucleus
Blue- grey cytoplasm
What are lymphocytes like
9-12 um in diameter
Nucleus, not much cytoplasm
What binds to eosin
Basic tissues
What binds to azure
Acidic tissue
