Exam 2 Malcos
Biology 141 with Malcos at Pennsylvania State University - All Campuses
About this deck
By: Alice Mancino
Textbook:
Anatomy & Physiology: The Unity of Form and Function 4th Edition
Created: 2010-03-01
Size: 14 flashcards
Views: 26
Textbook:
Anatomy & Physiology: The Unity of Form and Function 4th EditionCreated: 2010-03-01
Size: 14 flashcards
Views: 26
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have used this website for three exams, and I see a huge difference in my test results.”
Naj
Naj
Sign up (free) to study this.
Sweet
Carbohydrate rich food
salty
electrolyte balance
Umami
amino-rich food
Lingual papillae
small projections on tongue important for sensing food texture and manipulation
site of actual taste buds
Taste bud location
sides of papillae
taste bud
?A single taste bud is
a collection of 40-60 taste receptor cells (TRC)
?Food particles
dissolved by saliva
?Chemicals interact
with receptors on the TRCs
?Two types of
receptors
-- Ion channels
-- G-proteins
salty receptors
sodium ions
difuses in cell through leaky sodium channels
depolarizes membrane
results in neurotransmitter release
depolarizes afferent neuron
sour receptors
hydrogen ions
hydrogen ions diffuse into cell through sodium channels
inhibit potassium channels
depolarizes membrane
results in neurotransmitter release which depolarizes afferent neuron
G-protein coupled receptors
cause changes in the cell
neurotransmitter release without depolarization
ligand binds gpcr
causes intercellular changes
end result is release of calcium stored in cell
binds vescicles results in neurotransmitter release
depolarizes afferent neuron
Functions of muscles
Movement
Stability
Communication
Control of body openings and passages
Heat production (85% body heat prod. by muscles)
Properties of muscles
Excitability
Conductivity
Contractility
Extensibility
Elasticity
Skeletal muscle
voluntary, striated, multinucleate, attached to bone, skin, or fascia
cardiac muscle
involuntary, stratiated, mononucleate, autorhythmic
smooth muscle
involuntary, non-striated, mononucleate, hair follicles, walls of hollow organs
About this deck
By: Alice Mancino
Textbook: Anatomy & Physiology: The Unity of Form and Function 4th Edition
Created: 2010-03-01
Size: 14 flashcards
Views: 26
Textbook:
Anatomy & Physiology: The Unity of Form and Function 4th EditionCreated: 2010-03-01
Size: 14 flashcards
Views: 26
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have used this website for three exams, and I see a huge difference in my test results.”
Naj
Naj