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UCMT A&P 2
Final Anatomy and Physiology class flash cards.
Question | Answer |
---|---|
The two main divisions of the nervous system. | CNS - Central Nervous System; PNS - Peripheral Nervous System |
Afferent nerve pathways. | Carry nerve impulses into the CNS. |
Efferent nerve pathways. | Carry nerve impulses away from the CNS. |
The main structures of the CNS | Brain and Spinal Cord |
The main structures of the PNS | Spinal Nerves and Cranial Nerves. |
The three general functions of the nervous system. | Input - Integration - Output |
Where the cranial nerves branch off. | The brain |
Where the spinal nerves branch off. | The spinal cord |
What are the two general nervous tissue cells? | Neurons and Neuroglia |
These are more numerous nervous cells that provide structure and support, as well as speed up nerve impulses. | Neuroglia |
These are wirelike cells that transmit nerve impulses. | Neurons |
The major classifications of Neurons. | Multipolar, bipolar, and unipolar neurons. |
The part of neurons that process nerve signals. | Cell body of neuron. |
The part of neurons that carry nerve impulses towards the cell body. | Dendrites |
The part of neurons that carry nerve umpulses away from the cell body. | Axon |
These neurons are the most common type, are considered "motor neurons", and have many projections from the cell body. | Multipolar neurons. |
Neurons of the special sensory systems like sight, smell, hearing and equilibrium, and are the least common. | Bipolar neurons. |
General sensory neurons involved in the skin senses, like pain, temperature, touch and pressure. | Unipolar neurons. |
Sensory neurons are also called... | Afferent neurons. |
Motor neurons are also called... | Efferent neurons. |
These multipolar neurons occur soley within the CNS, never leaving the brain or spinal cord. | Interneurons. |
The two glial cells responsible for increasing the speed of nerve impulses are... | Oligodendrocytes and Neurolemmocytes |
These glia form myelin sheaths around CNS neurons. | Oligodenrtocytes. |
These glia form myelin sheaths around PNS neurons. | Neurolemmocytes [Schwann Cells] |
This structure of the nervous system is where the communication between neurons occurs. | Synapse |
These are hollow "sacks" containins chemichal messengers that emerge from the axon of the neuron. | Synaptic vesicles. |
These are the chemical messengers that attach at the dendrite of the receiving neuron. | Neurotransmitters |
These are the "locks" attached to the dendrite that receive the chemical messenger. | Receptor sites. |
These are neurotransmitters that say to continue the signal. | Excitatory |
These are neurotransmitters that stop the signal from continuing. | Inhibitory |
The space occupied by neurolemmocytes. | Internode. |
The space between the neurolemmocytes, or gaps in the myelin sheath. | Nerve Fiber Node [Node of Ranvier] |
Term used for the part of the axon wrapped by the neurolemmocyte. | Myelinated. |
Organs of transduction are ones that... | convert mechanical, chemical, or electromagnetic energy into electrochemical energy of the nervous system. |
The types of receptors that sense temperature are | thermoreceptors |
The types of receptors that detect for taste and smell are called | chemoreceptors. |
The types of receptors that detect light are called | photoreceptors |
What do mechanoreceptors detect? | Light touch, pressure, pain, and proprioception. |
Which area of the brain is responsible for conscious thought, communication, memory, and voluntary muscle control? | Cerebrum. |
Which part of the brain coordinates muscular movements at a subconscious level? | cerebellum. |
The place where the synapsing and location of cell bodies pertaining to the brain is called | gray matter ofthe brain. |
The hemisphere that is responsible for spacial relation, and is considered the artistic side | The right hemisphere. |
The place of the brain occupied by myelinated axons and is pretty much nerve pathways is | white matter of the brain. |
The hemisphere that controls language/verbal skills, and math is | The left hemisphere. |
The lobe of the brain that initiates skeletal activity is... | the frontal lobe. |
The lobe of the brain that is the "self awareness" lobe is... | the parietal lobe. |
The lobe of the brain where vision is processed is... | the occupital lobe. |
The lobe of the brain where hearing is processed is... | the temporal lobe. |
In the spinal cord, the outer-most area that conatains tracts of myelinated axons | white matter of the spinal cord. |
In the spinal cord, the core, where the synapses and cell bodies is | gray matter nuclei of the spinal cord. |
Within the vertebral canal, the roots where all of the sensory neurons connect with the spinal cord is called... | the dorsal roots. |
Within the vertebral canal, the roots where all of the motor neurons connect with the spinal cord is called... | the ventral roots. |
The areas of spinal nerves where the roots merge, exit the intervertebral foramen, and contain both motor and sensory neurons are called... | spintal nerve trunks. |
The spinal nerve branches considered autonomic, (involuntary), and distribute neurons to smooth muscle tissues are... | Visceral branches. |
The spinal nerve branches that are considered mostly voluntary are... | Somatic branches. |
The rami that go to the skin and the postural muscles of the back are... | Dorsal |
The rami that go to the skin and the bodywall and limb muscles are... | Ventral |
(Cranial Nerve V) Trigeminal | The nerve providing general sensation of the face. |
(Cranial Nerve X) Vagus | The nerve that aids in digestion and respiratory passageways, also motor control that slows the heart. |
(Cranial Nerve IX) Glossopharangeal | taste from posterior third of the tongue, inner side or the tympanic membrane, pharynx and larynx |
(Cranial Nerve XI) Accessory | Motor supply to SCM and Trapezius |
This is a reflex or movement not requiring cranial input, causing a protection from injury or trauma. | Flexor Withdrawl |
These are sensory neurons used to detect the speed or length of a muscle stretch and will cause contraction to prevent damage to the tissue. | Muscle Spindle Cells |
The reflex or movement that engage muscle fibers when the muscle has moved too fast or too far in order to protect itself is called | Stretch reflex |
The sensory neuron in the collagen at the border of the muscle belly that tells the muscle to relax to protect it from tearing is called | Golgi Tendon Organ |
This is the division of the peripheral nervous system that is in charge of involuntary control. | Autonomic Nervous System. |
Fight or Flight caused by innervation of smooth muscle blood vessels, cardiac muscle, and sweat glands is controled by | Sympathetic nervous system |
Rest and Digest caused by innervation of smooth muscle of the gut tube and other internal organs of digestion is controlled by | Parasympathetic nervous system |
The two main divisions of the Autonomic nervous system | Parasympathetic and Sympathetic nervous systems |
Loose connective tissue surrounding individual neurons is called | Endoneurium |
Dense Irregular connective tissue wrapping a bundle of neurons together into a fasciculus | Perineurium |
Dense Irregular connective tissue wraping a nerve | Epineurium |
The very protective tissues encasing CNS in bone, creating space for CSF to flow through, and surrounding the brain and spinal cord are called | Meninges |
The three layers of meninges surrounding the CNS | Dura Mater, Arachnoid Mater, Pia Mater |
The part made from Dura Mater that seperates the right and left hemispheres of cerebrum | Falx Cerebri |
The part made from Dura Mater that seperates the right and left sides of cerebelli | Falx Cerebelli |
The part made from Dura Mater that seperates the cerebrum from the cerebellum | Tentorium Cerebelli |
Large channels between meningeal and periosteal dura that drains CSF and blood from brain tissues | Dural venous sinuses |