Card Set Information
What are the paranasal sinuses?
air-filled spaces inside skull bones
Where do the paranasal sinuses open into?
Where are the paranasal sinsuses located?
What are they lined with?
What are the paranasal sinuses continous with?
What do the PNS reduce the wt of?
What are the 3 pairs of major salivary glands?
which salivary glands are the largest?
where do the parotid glands lie?
ant & inf to ear
Where do the submandibular glands lie?
floor of mouth=inside lower jaw
Where do the sublingual glands lie?
floor of mouth inf to tongue
Which salivary glands are the smallest?
What are the names of the lymph nodes of the head & neck?
deep cervical chain
Where does the pharynx lie?
post to oral cavity, nasal cavity & larnyx
How does food travel to the stomach?
How does air pass?
What are the subdivisions of the pharynx?
naso, oro, & laryngo
What does the pharynx help to produce?
sound of speech
What communicates with nasal cavity to provide passageway for air during breathing?
This lies post to the soft palate & inf to nasoph?
How does the laryngoph lie in reference to the oroph?
What is the passagway to the esophagus?
What is the voicebox?
What is an enlargement in the airway sup to trachea & inf to pharynx?
What conducts air into & out of trachea while preventing foreign objects from entering?
What contains the vocal cords?
What muscles & cartilages do the larynx contain that bound by elastic tissue?
thyroid, crichoid, epiglottic cart
These are horizontal vocal folds insid larynx that extend inward?
What are the false vocal cords?
upper folds b/c they don't create sound but help close airway=swallowing
What are the true vocal cords?
lower folds b/c they create sound=air btwn=vibration
What is btwn the vocal cords during breathing?
What is an important function of the glottis?
prevents food or liquid=entering trachea
What is a flap like structure that allows air to enter larynx?
What happens when we swallow?
larynx rises=epiglottis goes down=partially covers opening larynx=prevents food into air passages
What is the windpipe?
How does the trache lie?
ant=esophagus & extends down=thoracic cavity
What does the trachea split into?
how many pieces of hylaine cart are inside trachea?
How are the hylaine cart of trachea shaped?
like a C=open ends=toward spine
How do the glands from the endocrine sys secrete hormones?
they diffuse=ISF=Bloodstream=target cells
What are the major endocrine glands?
The thyroid gland is where to the larynx?
where does the thyroid gland lie?
adjacent & ant=trachea(saddles)
What does the thyroid consists of?
2 large lobes=connected via isthmus
What covers the thyroid gland?
capsule of CT w/follicles
What is the thyroid filled with?
What does the colloid do?
stores hormones produced by follicle
where are the parathyroid glands located?
post thyroid gl surface
How many parathyroid glands are there?
what is the color of the parathyroid glands?
what covers the parathyroid glands?
thin ct caps
where does the thymus lie?
inside mediastinum post to sternum/ant to aorta
Who is the thymus larger in?
What is important in early immunity?
What does the thymus secrete?
What does thymosins do?
when does the thymus start to shrink?
what is the primary fx of the lymphatic sys?
what is another major fx of lymph sys?
tranports excess fluid out IS in tissues=return to blood
how does the lymph sys transport fluid?
network of vessels
What type of tissue makes up the lymphatic caps?
squamous epi=allows tissue fluid to enter
Lymphatic caps form lymphatic pathways that merge to form what?
larger vessels & eventually unite=veins in thorax
Lymphatic vessels are similiar to veins but differ how?
Larger vessels lead to lymph nodes that continue on to form what?
larger lymphatic tr
What do lymphatic trunks drain lymph from?
Lymphatic trunks will join what two collecting ducts?
thoracic or r.lymph duct
which collecting duct is smaller?
The r. lymph duct receives lymph from where?
r.side head,neck r.up limb, r.thorax
The r. lymph duct empties into what vein?
r.subcl v near jug v
which collecting duct is larger?
The thoracic duct receieves lymph from what?
lower limbs, abdomen, l.up limb, l.side head,neck & thorax
Where does the thoracic duct drain into?
l.subcl v near l.jug v
When is tissue fluid referred to as lymph?
Why does lymph form?
B/c filtration from blood plasma occurs at a higher rate than does reabsorption
What influences lymph?
What type of pressure is lymph under?
low hydrostatic pr
what does the continuous movement of lymph stabilize?
fluid vol=body's IS
What is it called when tissue fluid accumulates in IS?
What are lymph nodes actually?
Where are lymph nodes found?
What do lymph nodes contain?
lymphocytes & macrophages
What is the size & shape of a lymph node?
What is the indented region of each node called & what is its importance?
hilum=blood vessels & nerve attatchment
What is the functional units of a lymph node?
what do the lymph nodules consist of?
b-cells & macrophages=nodes cortex
how can lymph nodules occur?
alone or groups
What is an example of a partially encapsulated lymph nodules?
These are spaces inside a node that comprise complex channels through which lymph moves?
There are more of what in lymph sinuses than in any other parts of node?
where are lymph nodes grouped along?
larger lymphatic vessels
What is meant by immune surveillance?
action=lymphocytes & macrophages
Where is the speen located?
up l.abd cavity, inf to diaphr,post&lat=stomach
What is the body's largest lymphatic orgain?
What does the spleen resemble?
large subdiv lymph node
What contains the largest amt of lymphatic tissue in adult body?
What does the spleen contain?
red & white pulp
What is concentrated in small regions containing many lymphocytes?
What contains red blood cells, lymphocytes and macrophages?
The lymphatic sys becomes less effective at fightning dis as we age resulting in what?