Flashcards in Practice Deck (31):
Which of these ions exists in the highest concentration in the extracellular environment?
D. None of the above
In a patient with a compromised blood pressure regulation system, systolic blood pressure drops from 120 to 80. in the same patient with a working regulatory system, blood pressure drops from 120 to 110. what is the gain of this regulatory pathway
What kind of regulatory pathway increases the force of uterine contraction in response to stretching of the cervix during childbirth?
Positive feedback loop
Whihc organelle is involved in intracellular trafficking
ER and Golgi
Glycolysis takes place in the _____, and the Kreb's cycle in the _____.
What is the movement of particles from a region of high concentration to a region of low concentration.
The ____ energy is the average of the ___energy for all molecules that comprise of a sample matter
The Na/K pump is an example of which type of transport?
Primary active antitransport
Na/Glucose transporter is an example of which type of transport?
Secondary active cotransport
Na/H pump is an example of which type of transport
Secondary active antitransport
Where could you find a selectivity filter composed of carbonyl oxygens?
Voltage-gated potassium channels differ from voltage-gated sodium channels in what way?
Potassium channels have one gate
Which type of axon will propagate an action potential the fastest?
Large diameter, myelinated
An action potential propagating toward the distal end of the axon is propagating in the ____ direction
Calculate the elctromotive force of chloride ion across a membrane when [Cl]i = 2mEq and [Cl]o=200
Sarcomere is composed of _______.
Which of the following is composed entirely of myosin?
During contraction, when is the tension in a sarcomere greatest?
Actin filaments on opposite sides of the sarcomere fully overlap myosin heads without touch each other
______contraction occurs when there is an increase in muscle tension but not length
What class of lever is demonstrated by raising the body on the ball of the foot
Second - class
Ach is synthesized where?
Cytosol of the axon terminal
Acetylcholinesterase is inhibited by ______?
According to what was discussed in class, what is an effective treatment of myasthenia gravis?
Soleus is primarily composed of ______
Gastrocnemius is mostly composed of ______
What is the osmolarity of a 4mM solution of CaCl2
What characteristic does cardiac muscle have that skeletal muscles do not?
True/false Slow cardiac action potentials depolarize without any external signal
What is the ejection fraction of someone who has EDV=125mL and an ESV = 50 mL?
What are the names of the AV valves in the order in which blood passes through them?
What are the purpose of the papillary muscles and chordae tendineae?
To prevent backflow from ventricle