Practical 2 Flashcards
Antigens
- surface glycoproteins and glycolipids
- reacts with a specific antibody
- able to produce a specific immune response
Antibodies
- found in plasna
- combines with a specific antigen
- involved in inhibiting or destroying the antigen and its cell
Type A
A antigen, Anti-B antibody
Type B
B antigen, Anti-A antibody
Type AB
Both A and B antigen, Neither antibody
Type O
Neither A nor B antigen, Both anti-A and anti-B antibodies
Rh Positive
presence of Rh antigen on erythrocyte (blood does not contain anti-Rh antibodies)
Rh Negative
absence of Rh antigen on erythrocyte (blood does not contain anti-Rh antibodies UNLESS the person is exposed to Rh antigen in childbirth, blood transfusions, and sharing needles)
Functions of the Respiratory System
- provides gas exchange
- regulates blood pH
- contains receptors for sense of smell
- filters air
- produces sounds
- rids the body of some water and heat through expired air
Respiratory System Main Organs
- nose
- pharynx
- larynx
- trachea
- bronchi
- lungs
Upper Respiratory System
- nose
- nasal cavity
- pharynx
- associated structures
Lower Respiratory System
- larynx
- trachea
- bronchi
- lungs
Conducting Zone
- filters, warms, and moistens air
- conducts that air into the lungs
- nose, nasal cavity pharynx, larynx, trachea, bronchi, bronchioles, terminal bronchioles
Respiratory Zone
- site of gas exchange
- respiratory bronchioles, alveolar ducts, alveolar sacs, alveoli
Nose function
warms, humidifies, and filters air
Nose main composition
bone (base) and hyaline cartilage (anterior)
External Nares
openings for air to enter nasal cavity (nostrils)
Nasal Cavity
lined with mucous membrane
Nasal Septum
separates right and left nasal cavity (nosebleeds, deviated septum)
Turbinates/Conchae
curved bony structures in nasal cavity (superior, middle, inferior)
Meatus
increases surface area, warms and humidifies air, dry mouth when sick (superior, middle, inferior)
Hard Palate
bony; forms floor of nasal cavity
Internal Nares
openings that lead into nasopharynx
Pharynx
throat
Nasopharynx
begins at internal nares and ends at soft palate
Oropharynx
begins at soft palate and ends at hyoid bone
Laryngopharynx
begins at hyoid bone and ends at esophagus
Soft palate
posterior extension of hard palate
Uvula
dangles inferiorly as an extension of soft palate (swallowing)
Paranasal Sinuses
cavities that warm and moisten air and drain into nasal cavity
- frontal sinus
- maxillary sinus
- ethmoidal sinus
- sphenoidal sinus
Auditory (Eustachian) Tubes
connect ear to nasopharynx (behind nasal cavity)
Tonsils
- pharyngeal tonsil (1)
- palatine tonsils (2)
- lingual tonsils (2)
Larynx
voicebox (all cartilages are hyaline except epiglottis)
Glottis
opening into larynx
Paired Cartilages
posterior wall of larynx
- arytenoid cartilages
- cuneiform cartilages
- conrniculate cartilages
Thyroid Cartilage
- single cartilage
- largest
- Adam’s apple
Cricoid Cartilage
- single cartilage
- complete ring
- larger on posterior side
Epiglottis
- single cartilage
- closes over glottis
- elastic cartilage
Structures of Voice Production
folds are lateral to glottis
Ventricular folds/ Vestibular folds/ False Vocal Cords
superior and lateral
Vocal folds/ True Vocal Cords
- inferior and medial
- attached to arytenoid cartilages via small muscles
- laryngitis
Trachea
- windpipe
- tubular passageway for air
- extends from larynx and divides into primary bronchi
- anterior to esophagus
- many incomplete rings of cartilage around trachea
Tracheal Cartilage
where a tracheotomy is performed
Trachealis Muscle
- changes diameter of trachea during inhalation and exhalation
- coughing and choking
Lungs
- apex: rounded superior part
- base: broader inferior part
Hilum
medial side of the lung (entrance and exit area for bronchi, blood supply, lymphatic vessels, and nerves)
Lobes of Right Lung
superior, middle and inferior
Lobes of Left Lung
superior and inferior (cardiac notch is a concave surface where apex of heart lies)
Pleaural Membrane
encloses and protects lungs
Double-Layered Serous Membrane
- visceral pleura: covers surface of each lung
- parietal pleura: lines thoracic cavity wall
Pleaural Cavity
- space between visceral and parietal pleura
- contains pleural fluid which reduces friction during inhalation and exhalation
Bronchial Tree
Trachea Primary Bronchi Secondary Bronchi Tertiary Bronchi Bronchioles Terminal Bronchioles Respiratory Bronchioles Alveolar Ducts Alveolar Sacs Alveoli
Trachea
Pseudostratified ciliated columnar epithelium
Primary Bronchi
Pseudostratified ciliated columnar epithelium
Secondary Bronchi
Simple columnar epithelium with few cilia
Tertiary Bronchi
Simple columnar epithelium with few cilia and Simple Cuboidal epithelium with few cilia
Bronchioles
Simple cuboidal epithelium with few cilia
Terminal Bronchioles
Simple cuboidal epithelium with few cilia
Respiratory Bronchioles
Simple cuboidal epithelium with few cilia and Simple squamous epithelium
Alveolar Ducts
Simple squamous epithelium
Alveolar Sacs
Simple squamous epithelium
Alveoli
Simple squamous epithelium
Carina
where trachea splits into right and left primary (main) bronchi
Which bronchus is longer?
Left primary bronchus
Changes from bronchi to bronchioles
- diameter of airway decreases
- changes in epithelium
- change from cartilage to smooth muscle (asthmatic inhalers)
How does smoking affect the respiratory system?
- nicotine constricts terminal bronchioles
- hemoglobin has a greater affinity for CO than O2
- increased mucus secretion and swelling of mucosal lining
- destruction of elastic fibers (emphysema)
Mucociliary Clearance
defense mechanism to protect lungs from pollutants, allergens, and pathogens (cilia and goblet cells work together to remove inhaled particles from lungs)
–cilia become paralyzed and debris is not cleared
Extensive long term smoking
change in tissue type (metaplasia) from pseudo stratified ciliated columnar epithelium to stratified squamous epithelium (no cilia)
Pulmonary Ventilation
- macroscopic
- breathing
- moving air between atmosphere and lungs (inhalation and exhalation)
External Respiration
movement of O2 and CO2 between alveoli and pulmonary capillaries
Internal Respiration
movement of O2 and CO2 between capillaries and tissues
Cellular Respiration
cells use O2 to create ATP (energy)
Pulmonary ventilation inhalation
air moves into lungs when pressure inside lungs is less than atmospheric pressure
Pulmonary ventilation exhalation
air moves out of lungs when pressure inside lungs is greater than atmospheric pressure
Boyles Law
inverse relationship between pressure and volume
Pressure changes during pulmonary ventilation inhalation
- thorax expands
- parietal pleura pulled outward
- pleural cavity volume increases
- intrapleural pressure decreases
- visceral pleura and lungs pulled outward
- alveolar pressure decreases
- air enters lungs
Pressure changes during pulmonary ventilation exhalation
- lungs recoil and thorax decreases in size
- visceral pleura pulled inward
- alveolar pressure increases
- pleural cavity volume decreases and parietal pleura pulled inward
- intrapleural pressure increases
- air leaves lungs
Intrapleural Pressure
pressure between the two pleural layer
Alveolar Pressure
pressure inside the lungs
Pneumothorax
- air enters pleural cavity
- intrapleural pressure increases
- lung collapses
- open valve
- air escapes
- intrapleural pressure decreases
- inhales
- close valve
- intrapleural pressure increases
- exhales
- that shit hurted
Quiet inhalation muscles
- diaphragm contracts
- external intercostal muscles contract
Forced inhalation muscles
- diaphragm contracts
- external intercostal muscles contract
- sternocleidomastoid contracts
- scalenes contract
- pectoralis minor muscles contract
Quiet exhalation muscles
- diaphragm relaxes
- external iintercostal muscles relax
Forced exhalation muscles
- diaphragm relaxes
- external intercostal muscles relax
- internal intercostal muscles contract
- abdominal muscles–external obliques, internal obliques, transverse abdominal, recites abdominus contract
Lymphatic System Functions
- drains excess interstitial fluid and returns it to bloodstream
- carries out immune responses
- transports dietary lipids and lipid soluble vitamins (A, D, E, K)
Lymphatic System Componenets
- lymphatic organs
- lymphatic tissues
- lymphatic vessels
- lymph
Lymph
fluid found within lymphatic vessels
Blood capillaries filter:
more plasma than what is reabsorbed