Everything Flashcards

(31 cards)

1
Q

Subdivision of the ANS embedded in the GI tract; contains - 100 million neurons and regulates local motility, secretion and blood flow

A

Enteric nervous systems

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2
Q

Spatial organisation of auditory structures (basilar membrane, cochlear nucleus, auditory cortex), based on frequency

A

Tonotopic mapping

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3
Q

In Rods, light energy activates the G-protein on photoreceptors which causes the activation of

A

Rhodopsin and reduced cyclic GMP

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4
Q

In the dark, what makes up the dark current in the absence of a stimulus

A

Influx Sodium and Calcium

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5
Q

Small unmyelinated fibres that conduct slow pain and temperature

A

C Fibres

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6
Q

Ganglia are located where in the parasympathetic division

A

Near or in target organs

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7
Q

G-Protein-coupled receptors located on parasympathetic target tissues. Mediate slower, prolonged responses

A

Muscarinic Acetylcholine Receptors

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8
Q

Division of the peripheral nervous system that regulates involuntary physiological processes, including heart rate, blood pressure, digestion, and respiration

A

Autonomic Nervous System

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9
Q

Specialised capillary network through which hypothalamic parvocellular neurosecretory cells deliver hormones to the anterior pituitary

A

Hypophyseal Portal System

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10
Q

Uses interaural time differences for low frequencies and intensity differences for high frequencies

A

Duplex Theory of Sound Localisation

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11
Q

Located in supraoptic and paraventricular nuclei; project to posterior pituitary release oxytocin or vasopressin directly into circulation

A

Magnocellular Neurosecretory Cells

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12
Q

Hypothalamic region with both magnocellular and parvocellular neurosecretory cells; coordinated endocrine and autonomic output

A

Paraventricular Nucleus

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13
Q

Large onion-like receptor deep in the dermis, rapidly adapting and highly sensitive to high-frequency vibrations and deep pressure.

A

Pacinian Corpuscle

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14
Q

Ganglia are located where in the parasympathetic division

A

Near or in target organs

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15
Q

Six layers including magnocellular input and parvocellular input into Layer 4, arranged in orientation specific columns

A

Visual cortex

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16
Q

The specific area of skin where a stimulus must occur to activate a neuron

A

Receptive field

17
Q

Neurotransmitter and Receptor located at the Ganglion of preganglionic and postganglionic neurons in sympathetic and parasympathetic divisions

A

Acetylcholine and Nicotinic Receptors

18
Q

Slowly adapting mechanoreceptor located in the basal epidermis; detects sustained pressure and texture

A

Merkel’s Disk

19
Q

Neurotransmitters released from varicosities

A

Diffuse synapse

20
Q

Neurotransmitters released from specific areas called active zones

A

Discrete synapses

21
Q

The indirect pathway of visual information

A

Photoreceptor to Horizontal or Amacrine Cells to Retinal Ganglion Cells

22
Q

The direct pathway of visual information

A

Photoreceptor to Bipolar cells to Retinal Ganglion cells

23
Q

Large diameter, myelinated fibres transmitting fast, discriminative touch signals (e.g. from Merkle or Meissner receptors)

A

Type A(beta) fibres

24
Q

Parasympathetic preganglionic neurons originate in what two regions of the spinal cord

A

Cranial and Sacral

25
Brain structure coordinating autonomic and endocrine responses to maintain homeostasis?
Hypothalamus
26
The posterior pituitary is responsible for the production and release of which two hormones
Oxytocin and Vasopressin
27
Unencapsulated receptors found throughout the body that responds to pain, temperature, and crude touch
Free Nerve Endings
28
Free nerve endings that detect tissue damage or potential harm; associated with pain perception
Nociceptors
29
Receptor types for Salty and Sour vs Sweet and Bitter (the same as sodium)
Ion channels; G-protein channels receptors (GPCRs)
30
Type of organisation observed in receptive fields of retinal ganglion cells
Centre surround
31
The visual pathway from where it leaves the eye to arrives in the brain? (6 stops)
Retina - Optic Nerve - Optic Chiasm - LGN (?) - Optic Radiations - V1 (?Visual cortex)