A&P 2
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A&P 2 - Marcador
A&P 2 - Detalles
Niveles:
Preguntas:
285 preguntas
| 🇬🇧 | 🇬🇧 |
| Which structures does CSF drain into after it is done circulating through the nervous system? | Arachnoid villus |
| Which nervous system tract transmits information pertaining to perception of pain and temperature? | Lateral spinothalamic tracts |
| When the membrane potential neuron reaches -59 mV, which channels open? | Voltage-gated sodium channels |
| Two types of cells unique to the nervous system are _________. | Glial (neuroglia) ; neurons |
| The superior colliculus of the midbrain transmits information regarding which of the following? | Vision |
| The receptors for hearing are on the __________. | Cochlear nerve |
| A wave of depolarization and repolarization spreading along a cell membrane is called _______________. | An action potential |
| Axons transmit action potentials: | Away from the cell body |
| During the depolarization of a neuron | Sodium Na ions diffuse into the cell |
| Hyperpolarization of a postsynaptic membranes is caused | Inhibitory neurotransmitters |
| Neurotransmitters are used in: | Chemical synapses |
| The ______ system prepares the body for action, and is most active during stressful situations. | Sympathetic |
| The main branch of the sacral plexus is the _____ nerve, which is the largest nerve in the body. | Sciatic |
| What are the 5 major types of Glia | Astrocytes, Microglia, Ependymal cells, Oligodendrocytes, Schwann cells |
| What Glia cells are found in the CNS | Astrocytes, Microglia, Ependymal cells, Oligodendrocytes |
| What Glia cells are found in the PNS | Schwann cells |
| CNS | Central Nervous system |
| PNS | Peripheral Nervous system |
| What 2 organs make up the CNS | Brain and spinal cord |
| Afferent division consists of | All incoming sensory pathways |
| Efferent division consists of | All outgoing motor pathways |
| When scared with dilated pupils and increased HR, what system is responding | Sympathetic nervous system |
| The spinal cord ends around L1, what is the name of the end? | Conus medullaris |
| Where does the parasympathetic nervous system start? | Brainstem, craniosacral region |
| Impulses are sent over this tract for voluntary movement | Cortical spinal or pyramidal tracts |
| What 3 cranial nerves are sensory only | Olfactory I, Optic II, Vestubulocochlear VIII |
| Where do you find the dentate nuclei | Cerebellum |
| What is the name of the sensory spinal ganglia? | Dorsal root ganglia |
| The name of the time period where no new impulses can travel through | Absolute refractory period |
| What neurotransmitters can be released to block pain | GABA, epinephrine and norepinephrine |
| The 3 parts of the brainstem are ? | Medulla, pons, midbrain |
| What in the cell membrane allows resting membrane potential ? | Sodium-potassium pumps |
| What type of info does a mixed nerve carry | Sensory and motor |
| What cranial nerve controls balance and coordination ? | VIII - Vastibulocochlear |
| The excitatory neurotransmitters cause what effect on receptors? | Opens sodium channels |
| Where do you find interneurons ? | Central nervous system |
| If you cannot move your tongue, what cranial nerve is damaged ? | VII - hypoglossal |
| Name 3 parts along a neuron for entering to leaving | Dendrite, cell body (soma), akon |
| What are the effectors of the autonomic nervous system? | Cardiac, smooth, adipose and glandular |
| What two structures does the foramen magnum separate ? | Spinal cord and medulla |
| What cells help to make CSF | Choroid plexus |
| What is the emotional part of the brain? | Limbic system |
| What cells make myelin in the PNS | Schwann cells |
| What are the three parts to synapse ? | Synaptic knob, synaptic cleft and synaptic membrane |
| What cells myelin in CNS ? | Oligodendrocytes |
| What parts of the brain can produce hormones? | Hypothalamus, pineal and pituitary gland |
| What 2 organs make up the central nervous system | Brain and spinal cord |
| What is neurilemma | Outermost layer of nerve fiber made by schwann cells essential for nerve regrowth |
| What are the 3 layers of connective tissues that hold the fibers of a nerve together | Endoneurium, perineurium , epineurium |
| White mater | Myelinated cells |
| Gray mater | Unmyelinated cells + cell bodies |
| How does depolarization of a membrane differ from hyperpolarization | Depolar - higher than -70 Na into cell, hyper - lower than -70 K leaving cell |
| What are gyri or folia ? | Bumps on surface |
| What are sulci? | Are grooves in brain |
| Describe the function of interferon. | Protein synthesized/ released into circulation by certain cells when invaded by viruses this signals nearby cells to enter a protective antiviral state |
| How do we move lymph around the body? | Same as venous circulation - skeletal muscle, respiration, one-way valves |
| What happens to the thymus gland as we age? | Gets fatty - turns yellow and fibrous |
| What region is the thymus located in | Mediastinum |
| What blood cells can develop in lymph nodes and spleen? | Lymphocytes and monocytes |
| What are lacteals? | Lymphatic vessels in our small intestine |