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A&P lecture Exam 2
CNS - Hoostal
Question | Answer |
---|---|
Function of an astrocyte | Aid in the BBB by wrapping astrocyte processes around capillaries |
These in the frontal cortex and hippocampus store and release glycogen as a reservoir of glucose. | Astrocytes |
Astrocytes are neuroglia of the..... | CNS |
Function of oligodendrocyte | Produces myelin sheath around axons of the CNS; cannot regenerate |
Oligodendrocytes are neuroglia of the... | CNS |
Function of microglia | phagocytosize microbes and damaged nervous tissue |
What is a phagocyte? | cells that can digest microbes and other foreign particles |
What is a phagosome? | A vesicle formed around a particle, absorbed by phagocytosis , formed by the fusion of the cell membrane around the particle |
Function of ependymal neuroglia | produce CSF from arterial blood; line ventricles |
Ependymal neuroglia are part of the... | CNS |
Function of satellite cells | flat cells that give structural support and material exchange to cell bodies of PNS nerve cells |
Satellite cells are part of the... | PNS |
Function of Schwann cells | neuroglia that myelinate axons in the PNS; can regenerate |
Schwann cells are neuroglia of the... | PNS |
The meninges include: | Pia mater, Dura mater, arachnoid mater |
What layer is the pia mater? | The inner layer of meninges |
What layer is the dura mater? | outer sac of the meninges |
What layer is the arachnoid mater? | the middle layer of the meninges |
Function of the brainstem | connects the cerebrum with the spinal cord, also provides sensory and motor relays to the face and neck via the cranial nerves |
The brainstem consists of... | midbrain, medulla oblongata, pons, and reticular activating system (RAS) |
The diencephalon consists of what 3 parts | Thalamus, Epithalamus (including pineal gland), and hypothalamus |
What are the hormones of the hypothalamus? | -Corticotropin-releasing hormone (CRH) -Adrenal corticotrophic hormone (ACTH) -Gonadotropin-releasing hormone (GnRH) -Thyrotropin releasing hormone (TRH) - Growth hormone-releasing hormone (GHRH) -Growth hormone-inhibiting hormone (GHIH -Oxytocin |
Functions of the hypothalamus | -Axons extend from nuclei to sympathetic & parasympathetic nuclei in the brain stem & spinal cord to regulate HR, movement of food t/ the GI tract, & contraction of the urinary bladder, -Control of body temp -Satiety, hunger, and thirst center |