Final Exam Flashcards
Name the 3 parts of the resp system
1- Conducting (Conduction of air only- NO GAS EXCHANGE- Trachea, bronchi, terminal bronchioles)
2-Transitional (Conduction AND gas exchange- respiratory bronchioles)
3- Respiratory (gas exchange ONLY- Alveolar ducts and alveolar sacs)
Majority of gas exchange happens in the:
alveolar sacs
5 cells found in the lungs
Ciliated pseudostratified columnar epithelium goblet cells (secrete mucus) Brush cells (parents of the goblet cells) Basal cells (parent cells of everything BUT goblet cells) APUD cells (small, granular)
Type of cartilage found in the trachea
hyaline cartilage
Open part of the trachea has:
smooth muscle, and fibroelastic ligaments
Cells in the trachea:
Respiratory epithelium and mucous glands
Epithelium in bronchi
Respiratory epithelium
Bronchi have isolated ____ _____ plates
hyalin cartilage
Mucus and serous glands, with lymphoid nodules, and free lymphocytes
bronchi
No cartilage of glands scattered goblet cells respiratory epithelium, then transitions into cuboidal has clara cells lots of smooth muscle and elastic tissue
bronchiole
Clara cells
no celia
secrete surfactant
Simple cuboidal epithelium
has clara cells
lots of saccular alveoli lines w/ simple squamous epi.
Has smooth muscle and elastic tissue
respiratory bronchiole
simple squamous epi
smooth muscle to control the diameter
lots of elastic and collagen fibers for suppor
alveolar duct
Blood-air barrier is located here
Interstium is located outside here
Alveoli
Cells that make up alveoli and their function
Endothelium of capillary- Thin squamous, held together by desmosomes and junctions Type 1 pneumocytes (structure) Type 2 Pneumocyes (secretes surfactant) Dust cells (macrophages)
