Compare and contrast: Stretch reflex versus withdrawal reflex – in what way do these differ?

Stretch reflex is monosynaptic and withdrawal reflex is polysynaptic.

Both reflexes are monosynaptic.

Stretch reflex involves pain receptors, withdrawal reflex does not.

Withdrawal reflex is faster than stretch reflex.

What is the membrane potential at the resting membrane potential? Where is this on an action potential graph?

-70 mV; at the flat baseline before the spike

+30 mV; at the peak of the action potential

0 mV; at the midpoint of the graph

The membrane potential at the threshold is typically: What does the all-or-none principle state?

-55 mV; An action potential either occurs fully or not at all once threshold is reached.

-70 mV; An action potential can occur partially if threshold is reached.

0 mV; The action potential strength varies with stimulus intensity.

-90 mV; The action potential can be graded depending on the membrane potential.

What happens during depolarization in an action potential?

The inside of the neuron becomes more positive.

The inside of the neuron becomes more negative.

The neuron releases neurotransmitters.

The neuron returns to its resting state.

During the initial phase of an action potential, which gates are open/closed, which ions are moving and in which direction, and what is the typical membrane potential range at this point?

Sodium gates open, sodium ions move inward, membrane potential ranges from -70 mV to -55 mV.

Potassium gates open, potassium ions move inward, membrane potential ranges from -70 mV to -90 mV.

Sodium gates closed, potassium ions move outward, membrane potential ranges from -55 mV to +30 mV.

Calcium gates open, calcium ions move outward, membrane potential ranges from -90 mV to -70 mV.

What gates are open/closed at the peak of an action potential? Where is this on an action potential graph? What is the membrane potential at this point?

At the peak of an action potential, sodium channels are inactivated, potassium channels are open, this is at the highest point of the graph, and the membrane potential is around +30 mV.

At the peak of an action potential, both sodium and potassium channels are closed, this is at the lowest point of the graph, and the membrane potential is around -70 mV.

At the peak of an action potential, sodium channels are open, potassium channels are closed, this is at the resting phase of the graph, and the membrane potential is around 0 mV.

At the peak of an action potential, potassium channels are inactivated, sodium channels are open, this is at the falling phase of the graph, and the membrane potential is around -55 mV.

During repolarization, what gates are open/closed, which ions are moving and in which direction, where is this on an action potential graph, and what is the membrane potential range at this point?

Potassium gates are open, potassium ions move outward, this occurs after the peak of the action potential, and the membrane potential ranges from +30 mV to -70 mV.

Sodium gates are open, sodium ions move inward, this occurs at the start of the action potential, and the membrane potential ranges from -70 mV to +30 mV.

Calcium gates are open, calcium ions move inward, this occurs during the resting phase, and the membrane potential is stable at -70 mV.

Potassium gates are closed, sodium ions move outward, this occurs at the threshold, and the membrane potential is at -55 mV.

Where is hyperpolarization on an action potential graph? What is the membrane potential range at this point?

Hyperpolarization occurs after repolarization, with the membrane potential typically ranging from -70 mV to -90 mV.

Hyperpolarization occurs at the peak of the action potential, with the membrane potential around +30 mV.

Hyperpolarization occurs during depolarization, with the membrane potential ranging from -55 mV to 0 mV.

Hyperpolarization occurs at the resting potential, with the membrane potential at -70 mV.

The purpose of the sodium-potassium pump is:

to maintain the electrochemical gradient across the cell membrane

to produce energy for cellular respiration

to transport oxygen in the blood

to synthesize proteins in the cell

The importance of cerebrospinal fluid (CSF) is:

It protects the brain and spinal cord by acting as a cushion.

It helps in the digestion of food.

It transports oxygen directly to brain cells.

It produces hormones for the body.

The brainstem is made up of which 3 anatomical divisions?

Midbrain, Pons, Medulla oblongata

Cerebrum, Cerebellum, Medulla oblongata

Midbrain, Cerebellum, Medulla oblongata

The reticular formation is a network of neurons in the brainstem that plays a role in which of the following?

Regulating sleep and wakefulness

Controlling voluntary muscle movements

Practical quiz 5 study guide - Nervous system

Authored by That_Anime189 That_Anime189

Science

University

Practical quiz 5 study guide - Nervous system

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

Content View

Student View

38 questions

Show all answers

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Popular Resources on Wayground

15 questions

Fractions on a Number Line

Quiz

•

3rd Grade

10 questions

Probability Practice

Quiz

•

4th Grade

15 questions

Probability on Number LIne

Quiz

•

4th Grade

20 questions

Equivalent Fractions

Quiz

•

3rd Grade

25 questions

Multiplication Facts

Quiz

•

5th Grade

$fractions$

22 questions

fractions

Quiz

•

3rd Grade

6 questions

Appropriate Chromebook Usage

Lesson

•

7th Grade

10 questions

Greek Bases tele and phon

Quiz

•

6th - 8th Grade

Discover more resources for Science

30 questions

W25: PSYCH 250 - Exam 2 Practice

Quiz

•

University

Practical quiz 5 study guide - Nervous system

Define or list the term for the following part of the nervous system:

The central nervous system (CNS) consists of the brain and spinal cord, serving as the main control center for processing information and coordinating responses. It is distinct from the peripheral and autonomic nervous systems.

Define or list the term for the following part of the nervous system:

The peripheral nervous system (PNS) includes all nerves outside the brain and spinal cord, connecting the central nervous system to limbs and organs. It is essential for transmitting sensory and motor signals.

Define or list the term for the following division of the peripheral nervous system:

The sensory (afferent) division of the peripheral nervous system is responsible for transmitting sensory information from the body to the central nervous system, making it the correct term for this division.

Define or list the term for the following division of the peripheral nervous system:

The motor (efferent) division of the peripheral nervous system is responsible for transmitting signals from the central nervous system to muscles, enabling movement. This distinguishes it from sensory (afferent) functions.

Define or list the term for the following division of the motor (efferent) division: Somatic.

The somatic division of the motor (efferent) division controls voluntary movements by innervating skeletal muscles. Therefore, the correct term for this division is 'Somatic', distinguishing it from autonomic and other divisions.

Define or list the term for the following division of the motor (efferent) division:

The motor (efferent) division of the nervous system is divided into the autonomic and somatic systems. The autonomic division controls involuntary functions, while the somatic division governs voluntary movements. Thus, the correct term is 'Autonomic'.

Define or list the term for the following division of the autonomic nervous system:

The sympathetic division of the autonomic nervous system prepares the body for 'fight or flight' responses, increasing heart rate and energy availability. It contrasts with the parasympathetic division, which promotes 'rest and digest' functions.

Define or list the term for the following division of the autonomic nervous system:

The parasympathetic division of the autonomic nervous system is responsible for rest and digest functions, promoting relaxation and energy conservation, making it the correct choice in this context.

Define or list the term for the following cell of the nervous system:

Ependymal cells line the ventricles of the brain and the central canal of the spinal cord, playing a crucial role in the production and circulation of cerebrospinal fluid (CSF). They are distinct from astrocytes, oligodendrocytes, and microglia.

Define or list the term for the following cell of the nervous system:

Oligodendrocytes are a type of glial cell in the central nervous system that produce myelin, which insulates nerve fibers and enhances signal transmission. This distinguishes them from astrocytes, microglia, and Schwann cells.

Access all questions and much more by creating a free account

Popular Resources on Wayground

Discover more resources for Science