Question

In: Anatomy and Physiology

The magnocellular pathway receives information from M ganglion cells about peripheral vision and therefore _______ spatial...

The magnocellular pathway receives information from M ganglion cells about peripheral vision and therefore _______ spatial resolution images from the retina.

		High
		Low

The _________ is responsible for controlling the diameter of the pupil.

		Pupilloconstrictor zone
		Pupilloexpander zone
		Pupillolengthening zone
		Pupillomaximizing zone

A person’s _______ threshold is measured by taking the smallest amount of a stimulus and gradually increasing its strength until a person correctly guesses the stimulus’s presence 50% of the time.

		Minimum
		Difference
		Absolute
		Tolerance

A higher frequency means more pressure changes occur in a given second and occur closer to each other in space thus producing a _________ wavelength.

		Shorter
		Longer

Expert Solution

Answer )The magnocellular pathway receives information from M ganglion cells about peripheral vision and therefore __Low _____ spatial resolution images from the retina

The visual pathway is now being considered to be made of two lanes: one made of the large cells is called magnocellular pathway and the other of small cells is called parvocellular pathway.

Differences between two are

	Magnocellular	Parvocellular
Colour contrast	No	yes
Luminar contrast	Higher	Lower
Spatial frequency	Lower	Higher
Temporal frequency	Higher	Lower

Answer )The __Pupilloconstrictor zone_______ is responsible for controlling the diameter of the pupil.

Pupils contains Sphincter pupillae and when Parasympathetic system is activated it result in constriction of Pupil by acting on Sphincter pupillae through alpha 1 receptor .

Answer )A person’s __Absolute _____ threshold is measured by taking the smallest amount of a stimulus and gradually increasing its strength until a person correctly guesses the stimulus’s presence 50% of the time.

It is defined as the degree of intensity of a stimulus necessary to correctly detect that stimulus mostly 50% of the time..

Answer )A higher frequency means more pressure changes occur in a given second and occur closer to each other in space thus producing a __Shorter _______ wavelength.

Frequency is inversely related to wavelength so higher frequency have shorter wavelenth and vice versa .

Basic Funda--->If the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle will take shorter amount of time to complete the cycle .

Sydney Mullin answered 1 year ago

As we progress from bipolar cells to ganglion cells to later cells in the visual system,...

As we progress from bipolar cells to ganglion cells to later cells in the visual system, are receptor fields ordinarily larger, smaller, or the same size? Explain the concept of a receptive field in the visual system and provide an example of this concept for a ganglion cell within the retina.

The convergence of rods on ganglion cells a. increases visual resolution b. improves color vision c. creates a blind...

The convergence of rods on ganglion cells a. increases visual resolution b. improves color vision c. creates a blind spot on the retina d. increases visual acuity Hubel and Weisel (1963) recorded from individual neurons from visual cortex. They found that neurons in primary visual cortex a. responded selectively to elementary features of visual stimuli b. responded selectively to geons but not to different colors c. did not respond selectively to any visual stimuli. Desimone, et al (1984) presented macaque monkeys with stimuli that...

Explain the pathway used in the formation of insulin in pancreatic beta islet cells. Start from...

Explain the pathway used in the formation of insulin in pancreatic beta islet cells. Start from the DNA and end with secretion from the cell.

Multiple peripheral signals provide information to the CNS about food intake and other metabolic processes. Describe these...

Multiple peripheral signals provide information to the CNS about food intake and other metabolic processes. Describe these different signals, and how they are integrated within the hypothalamus to provide overall regulation of body weight.

How would you modulate the reverse cholesterol transport pathway to increase cholesterol ef?ux from cells in...

How would you modulate the reverse cholesterol transport pathway to increase cholesterol ef?ux from cells in normal individuals?

Provide brief information about the IMA(Institute Of Management Accountants) , its history , mission , vision...

Provide brief information about the IMA(Institute Of Management Accountants) , its history , mission , vision , core values , conditions for membership …etc. In K.S.A( not more than 200 words) ( 10 marks) Identify the ethical principles& standardsthat should guide the work of a Management accountant.In K.S.A (Refer to the Statement of Ethical Professional Practice) ( 10 marks)

Create a Java program that receives name, GPA, and graduation year information about a student as...

Create a Java program that receives name, GPA, and graduation year information about a student as user input and prints it to the console. Please use the following constructs in your program: Write your code in a Java class. Define name, GPA and graduation year as variables in our class. Create separate setter and getter methods for those variables. Use your main method, to receive the user input. Initialize an object of the class to call the setter methods and...

Receptors,General,Chemical senses what is the pathway taken by somatosensory information from the receptor to the brain...

Receptors,General,Chemical senses what is the pathway taken by somatosensory information from the receptor to the brain ? Physiology of tase besides the 5 primary sensations ehat other sensations are involved in taste ? olification: where are the receptors located ?

The National Corp Reporting Service receives the accompanying information from the CIA on Russian wheat harvest....

The National Corp Reporting Service receives the accompanying information from the CIA on Russian wheat harvest. Russian demand for wheat is ~ 210 million metric tons. a) What is the probability that the harvest will be adequate? b) If U. S. exports make up the difference, what is the probability that the U. S. will have to sell more than 20 million metric tons to the Russians? Millions of metric tons Probability < 170 0.05 170-180 0.15 180-190 0.23 190-200...

A 0.2 m^3 piston/cylinder contains air at 400 K and 400 kPa and receives heat from...

A 0.2 m^3 piston/cylinder contains air at 400 K and 400 kPa and receives heat from a constant temperature heat source at 1300 K. The piston expands at constant pressure to a volume of 0.6 m^3. Determine the change of availability of the system. Assume To= 300K and Po = 100kPa. Answer should be 210.3 kJ.