PCB4701 Quiz 1 & Exam 1 Review

All of the following are types of connective tissue EXCEPT

What causes hyperexcitability due to excess ACh in the terminal as a result of inhibition of acetyl choline esterase

Osmosis as defined by Van Hoff's Law is a type of

The time in which neurons can't respond to a new stimulus because most of the Na channels are in an inactivated state

The primary motor cortex contains sensory inputs from different parts of the body whose sizes equal the size of the part

The ___ of the cell is a matrix for chemical reactions such as glycolysis and ribosomal protein synthesis

Parkinson's Disease affects the somatosensory cortex to make skeletal muscles stiff during regular walking gait

(Fick's Law of Diffusion)diffusion rate is greatest when the molecule has a high mol. weight & has to cross a large area

The neurotransmitter ACh is broken down to acetyl coA and choline as catalyzed by the enzyme acetylcholine esterase

Knowing basic principals of osmotic pressure, which of the following must be correct

Protein-mediated transporters all exhibit saturation kinetics whereby the binding has a mathematical relationship called

AChE inhibitors increase available ACh, which in turn increases the ___ of the remaining ACh-R available to produce a __

The correct temporal sequence for events at the neuromuscular junction does NOT include

Which of the following physiological processes requires no ATP expenditure

Action potentials...

Glycoproteins are located on the extracellular face of the phospholipid bilayer to assist with cell-cell communication

The Na/K ATPase pump uses ___ to change its configuration & pump ions against their concentration gradients

Which is true concerning the input/output relationships (think Homunculus) for the cerebral cortex

The protein that gets phosphorylated to allow docking of the synaptic vessicles during transmission is calmodulin

Which of the following activities requires NO direct or indirect ATP expenditure

If there was a problem in simple diffusion, one could still contract their muscles

The ___ is the structure in which all electrical information is integrated to determine whether an AP will fire or not

ISF + plasma = ECF

Bone and cartilage are both connective tissue

An early symptom of Alzheimer's is loss of speech inflections because the facial motor cortex is affected

Sleep is an active process during which the brain has an increased oxygen consumption over that of the awake/day period

You have a L of rbcs that are infected w anthrax & need to be destroyed, knowing that rbcs are normally 300mOsm, you can

Which of the following acts as a presynaptic poison & doesn't disrupt enzymatic activity occurring in the synaptic cleft

If there was an electrical disturbance of 250pA at a given point 0, how much current would be remaining 240μM away

The smallest functional unit of the nervous system (that can perform all major functions) is the

The depolarization phase of the action potential is primarily attributable to the activity of

Fick's 1st Law of Diffusion states that all of the following influence diffusion rate (aka flux) EXCEPT

Which is INCORRECT concerning the Na/K ATPase pump

By the time an individual turns 2, one-half of all neurons will typically be lost through a process called apoptosis

An electroencephalogram records the health of the brain as a collection of EPSP & IPSP signals, but not APs

The study of ion channel physiology is essential because

If you wanted to cure damage from concussions, which type of neuroglia would you decide to study initially

Nerve gas used in the Iran-Iraq War caused hyperexcitability by targeting

The specialized excitatory local current in the postsynaptic target of a muscle cell is called

The conduction velocity of nerves are all equivalent because the action potential does not decrement with distance

The incidence of Alzheimer's ranges from 30-47% of individuals after the age of 85, and could raise to 80% by 2050

The K ion channel is an example of how molecules are transferred across the phospholipid bilayer by the process of

Which cytoskeletal protein transports vesicles, containing newly synthesized neurotransmitter, down the axon

Who were the 1st to visualize an AP using the giant axon of a squid at the Marine Biological Laboratory, Woods Hole

If an action potential reaches threshold, where in the neuron will the AP "spike" be initiated

During the repolarization of the AP, one channel is inactivating while another is being gated open

Which variable was evolutionarily enhanced by the Giant Squid to have a rapid conduction velocity in contrast to humans

In the early stages of development, neurons have a greater degree of ___ bc the brain can form new neural networks

Neurofibrillary tangles are found in patients with Alzheimer's Disease as well as elderly patients in what brain region

Which of the following diseases is correctly paired with the appropriate cause of the dysfunction

Which protein structure is utilized in reflex pathways

NNJ have the ability to change gene expression whereas NMJ do not

Which is INCORRECT with regards to cerebral cortex brain damage

Difficulty with motor balance, skilled motor function, and tripping a lot can mean damage to what area

Which of the following organic molecules would be classified as a protein

Your brain processes high amplitude waves called delta waves during slow-wave sleep when you have a nightmare

The calculated equilibrium potential for sodium (E_Na) for a typical mammalian nerve cell is closest to what value

Saltatory conduction= method of nerve impulse delivery in invertebrates to incr the diameter of NoR to increase reflexes

The brain stem is responsible for temperature and hormone regulation

If a cell has an electrical disturbance of at least 30mV, it will always fire an AP because of the ALL-or-NONE principle

Which of the following would be an effective way to increase the speed of APs in a robot that used physiological parts

Grandma has good reading comprehension & grasp of conversation but has difficulty with word choice. You should suspect..

Which is INCORRECT concerning chemical synaptic transmission

A cell (ICF= 170mM NaCl) is placed in a solution of 300mM glucose. Assuming neither could permeate the PL bilayer...

If you wanted to study how the blood brain barrier swells during obesity & diabetes, you would want to research more on

If you were bit by a cobra snake, the toxin would inhibit the release of ACh into the synaptic cleft

Schwann cells assist in neural regeneration in the PNS by forming __ that guides regenerating fibers to their location