ANAT 100 - BLOCK THEORY 3 TEST QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW
What are the two cyclic phases of breathing? Ans✓✓✓inspiration
(inhalation): draws oxygen rich air into the lungs
expiration (exhalation): forces oxygen poor air out of the lungs
What are the 5 functions of the respiratory system? Ans✓✓✓- gas
exchange
- gas conditioning
- sound production
- olfaction
- defense
What is gas exchange? Ans✓✓✓the movement of gases across
membranes
- external: exchange of gases between the air and blood
- internal: exchanges gases between the blood and cells
What is gas conditioning? Ans✓✓✓- gases entering the lungs need to be
conditioned to prevent damage
- occurs in the nasal cavities and paranasal sinuses
What chamber of the heart does the deoxygenated blood exit from to
enter the lungs? Ans✓✓✓right ventricle
,What chamber of the heart does oxygenated blood re-enter after exiting
the lungs? Ans✓✓✓left atrium
the epithelium of the respiratory tract is ____________
Ans✓✓✓pseudostratified
the apical surface of the epithelium is covered in _________
Ans✓✓✓cilia which provide an increased SA for conditioning air and
trap inhaled particles and microorganisms caught in mucus
What are the cells found throughout respiratory tract epithelium?
Ans✓✓✓globet mucus cells (produce mucus)
What does mucus do? Ans✓✓✓forms a protective layer over the
epithelium and traps particular matter or microorganisms that may be
inhales and provides moisture to humidify the air before it reaches the
lungs
What would happen if we didn't have ciliated respiratory epithelium?
Ans✓✓✓- the body would lose an aspect of immunity, allowing more
debris and potentially harmful pathogens into the system so someone
would be more susceptible to respiratory tract infections (RTI)
What are the two portions of the respiratory system? Ans✓✓✓-
conducting portion
,- respiratory portion
What is the conducting portion of the respiratory system? Ans✓✓✓-
transfers (conducts) inhaled air from the outside to the lung tissue and
vice versa
- where humidification and trapping of debris occurs
- no oxygen absorbed into the blood here because the walls of the organs
are too thick
What are the structures of the conducting portion? Ans✓✓✓- nose and
nasal cavity
- paranasal sinuses
- pharynx
- larynx
- trachea
- primary, secondary, and tertiary bronchi
- terminal bronchioles
What is the respiratory portion of the respiratory system? Ans✓✓✓-
transfers gases between the lungs and pulmonary capillaries
- the pulmonary capillaries are the terminal structures within the lungs
that have walls thin enough to facilitate the movement of gases from air
to blood and vice versa
, What are the structures of the respiratory portion? Ans✓✓✓- respiratory
bronchioles
- alveolar ducts
- alveolar sacs
- alveoli
What are the paranasal sinuses? Ans✓✓✓- a collection of air filled
spaces within the bones of the skull communicating with the nasal cavity
- aid in the conditioning of air, defence against pathogens, and act as
resonance chambers for speech as well
Names of the paranasal sinuses Ans✓✓✓all are paired
- frontal sinuses
- maxillary sinuses
- ethmoid sinuses
- sphenoid sinuses
What are the nose and nasal cavities? Ans✓✓✓- the first line of defence
against invading pathogens and debris, trapping them in coarse hair and
mucus
- air enters the vestibules (openings) of the nostrils and is passed into the
nasal cavity where it is conditioned
What are the nasal cavity boundaries? Ans✓✓✓1. roof - a bone in the
skull called the ethmoid
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW
What are the two cyclic phases of breathing? Ans✓✓✓inspiration
(inhalation): draws oxygen rich air into the lungs
expiration (exhalation): forces oxygen poor air out of the lungs
What are the 5 functions of the respiratory system? Ans✓✓✓- gas
exchange
- gas conditioning
- sound production
- olfaction
- defense
What is gas exchange? Ans✓✓✓the movement of gases across
membranes
- external: exchange of gases between the air and blood
- internal: exchanges gases between the blood and cells
What is gas conditioning? Ans✓✓✓- gases entering the lungs need to be
conditioned to prevent damage
- occurs in the nasal cavities and paranasal sinuses
What chamber of the heart does the deoxygenated blood exit from to
enter the lungs? Ans✓✓✓right ventricle
,What chamber of the heart does oxygenated blood re-enter after exiting
the lungs? Ans✓✓✓left atrium
the epithelium of the respiratory tract is ____________
Ans✓✓✓pseudostratified
the apical surface of the epithelium is covered in _________
Ans✓✓✓cilia which provide an increased SA for conditioning air and
trap inhaled particles and microorganisms caught in mucus
What are the cells found throughout respiratory tract epithelium?
Ans✓✓✓globet mucus cells (produce mucus)
What does mucus do? Ans✓✓✓forms a protective layer over the
epithelium and traps particular matter or microorganisms that may be
inhales and provides moisture to humidify the air before it reaches the
lungs
What would happen if we didn't have ciliated respiratory epithelium?
Ans✓✓✓- the body would lose an aspect of immunity, allowing more
debris and potentially harmful pathogens into the system so someone
would be more susceptible to respiratory tract infections (RTI)
What are the two portions of the respiratory system? Ans✓✓✓-
conducting portion
,- respiratory portion
What is the conducting portion of the respiratory system? Ans✓✓✓-
transfers (conducts) inhaled air from the outside to the lung tissue and
vice versa
- where humidification and trapping of debris occurs
- no oxygen absorbed into the blood here because the walls of the organs
are too thick
What are the structures of the conducting portion? Ans✓✓✓- nose and
nasal cavity
- paranasal sinuses
- pharynx
- larynx
- trachea
- primary, secondary, and tertiary bronchi
- terminal bronchioles
What is the respiratory portion of the respiratory system? Ans✓✓✓-
transfers gases between the lungs and pulmonary capillaries
- the pulmonary capillaries are the terminal structures within the lungs
that have walls thin enough to facilitate the movement of gases from air
to blood and vice versa
, What are the structures of the respiratory portion? Ans✓✓✓- respiratory
bronchioles
- alveolar ducts
- alveolar sacs
- alveoli
What are the paranasal sinuses? Ans✓✓✓- a collection of air filled
spaces within the bones of the skull communicating with the nasal cavity
- aid in the conditioning of air, defence against pathogens, and act as
resonance chambers for speech as well
Names of the paranasal sinuses Ans✓✓✓all are paired
- frontal sinuses
- maxillary sinuses
- ethmoid sinuses
- sphenoid sinuses
What are the nose and nasal cavities? Ans✓✓✓- the first line of defence
against invading pathogens and debris, trapping them in coarse hair and
mucus
- air enters the vestibules (openings) of the nostrils and is passed into the
nasal cavity where it is conditioned
What are the nasal cavity boundaries? Ans✓✓✓1. roof - a bone in the
skull called the ethmoid
