Synaptic knob Study guides, Class notes & Summaries

Depolarization, Summation, and Neural Pathways Questions And Answers Depolarization - ANS-Action potential depolarizes synaptic knob Secondary Messenger - ANS-Ca enters axoplasm triggering norepi First Messenger - ANS-norepi binds to receptor site causing adenyl cyclase within the cytoplasm to catalyze the formation of cyclic AMP from ATP Second Messenger - ANS-cyclic AMP opens ion channels allowing NA to depolarize membrane Summation - ANS-Integration of EPSP's and IPSP's to reach depo...

AQA A Level Psychology Biopsychology Questions and Answers Already Graded A What is the nervous system The nervous system is a specialised group of cells in our body and is our primary communication system, it collects processes and responds to different information and co-ordinates the working of different functions within the body. It is made up of both the central nervous system and the peripheral nervous system. What is the central nervous system (CNS) The CNS includes the brain and the spi...

Describe the events of fertilisation that occur after the acrosome reaction. -Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane -Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in towards the centre of the bilayer Describe the role of the CFTR protein in e...

Quiz P_________ is the return of polarity from positive back to negative (the RMP) - correct answer Repolarization ________ occurs when the inside of the cell becomes more positive (less negative) than the resting membrane potential - correct answer Depolarization During the ________ ________ an axon is either incapable of generating an action potential, or requires a larger than normal stimulus - correct answer refractory period voltage-gated sodium channels _________ during the relati...

Depolarization, Summation, and Neural Pathways Questions And Answers Depolarization - ANS-Action potential depolarizes synaptic knob Secondary Messenger - ANS-Ca enters axoplasm triggering norepi First Messenger - ANS-norepi binds to receptor site causing adenyl cyclase within the cytoplasm to catalyze the formation of cyclic AMP from ATP Second Messenger - ANS-cyclic AMP opens ion channels allowing NA to depolarize membrane Summation - ANS-Integration of EPSP's and IPSP's to reach depo...

dendrite - the _____ of a neuron carries the impulse towards the nucleus nissl body - which part of a neuron is directed involved with protein synthesis synaptic knob - which part of a neuron comes in close proximity to another neuron at the synapse? microglia - the phagocytic cells in the CNS are the _____ sensory - the following belong together except which one? a. multipolar b. motor c. sensory d. efferent sensory neuron - the following belong together except which one? a. interneu...

A&P Exam 4 Homework1. Graded potentials are produced within the _____ segment of a neuron. - correct answer Receptive Graded potentials result from the opening of _____ - correct answer Ligand-gated channels An inhibitory postsynaptic potential results from the opening of _____ - correct answer Potassium and/or chloride channels Indicate the summative effect that brings the initial segment closest to threshold - correct answer Two EPSPs in proximity to each other When voltage-gated s...

The division of the nervous system that carries signals from nerve endings to the CNS is the - a. sensory (afferent division) The part of the nervous system that carries signals from the skin, bones, joints, and muscles to the central nervous system is the - d. somatic sensory The central nervous system includes the - c. brain and spinal cord The blood-brain barrier primarily consists of which type of nerve cell? - c. astrocyte When you touch something hot, the type of neurons that send ...

Anatomy Lecture Exam 3 Questions and Answers Already Passed what are the three types of muscle tissue? a) skeletal muscle b) rough muscle c) smooth muscle d) cardiac muscle smooth muscle, cardiac muscle, and skeletal muscle Excitability the ability of muscle cells to respond to nerve signals or other stimuli, causing electrical impulses to travel along the muscles cells' plasma membrane Contractibility the ability to generate a strong pulling force while muscle cells shorten (contract) E...

BIO 207 - Nervous System Quiz. Questions and Answers. A+ Guide. Nervous system Quiz An unmyelinated nerve fiber is ______, whereas a myelinated nerve fiber is ______. Select one: a. gray, and composing the gray matter of the brain and spinal cord; white, and composing the white matter of the brain and spinal cord b. white, and composing the gray matter of the brain and spinal cord; gray, and composing the white matter of the brain and spinal cord c. white, and composing the white matte...