How We Cough Flashcards
Which sensory receptors are stimulated in coughing?
CN IX or CN X
What happens to the vocal cords in coughing?
vagus nerves cause adduction of vocal cords, this causes rime glottidis to close, and then the vocal cords suddenly abduct, causing the rimaglottidis to open
Do abdominal wall muscle relax or contract in coughing?
contract
What happens to the soft palate during coughing?
tenses and elevates, closing off entrance to nasopharynx
What is the carotid sheath a tube of?
Deep fascia
What does the carotid sheath contain?
Vagus nerves, internal carotid and common carotid arteries, internal jugular vein
Which sensory receptors are stimulated in both sneezing and coughing?
CNV or CNIX
How do visceral afferents travel from visceral pleura and respiratory tree to medulla?
by pulmonary plexus and then by vagus nerve
What does the diaphragm do in forced inspiration?
flatten, then descend maximally
What are the accessory muscles of forced inspiration?
pectoralis major, minor and sternocleidomastoid
Where do the vagus nerves connect with the CNS?
medulla oblongata
What do tonic contractions do?
maintain posture and support vertebral column and movements of spine
What does guarding protect?
abdominal viscera
What type of muscles are the intrinsic muscles of the larynx?
skeletal
What does the muscular part of the diaphragm attach peripherally to?
the sternum
the lower 6 ribs & costal cartilages
L1-L3 vertebral bodies
