lab exam 1 Flashcards
what are the cavity and sub cavities?
thorasic- plural and peridcardial
abdominopelvic- abdominal and pelvic
what are 5 structures within mediastinum and what is it?
heart, aorta, esophagus, trachea, and bronchi and is the area between the lungs
what are the different cavities?
parietal = top
cavity = middle empty space
visceral= bottom before hitting organ
define diffusion?
spreading of something more widely, think high to low concentration
define osmosis?
molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated
define osmosis?
molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated
what two cell types does neural tissue comprised of? and their functions?
neruons- conduct electrical impulses
neuroglia- which support nourish and repair
what does the cerebrum do?
conscious thought processes, intellectual functions monitors, sensory input and sends out motor instructions
what does the epithalamus do?
contains the pineal gland, produces melatonin to regulate sleep cycles
what does the thalamus do?
relays/filters sensory input to cerebrum is part of the limbic system (memory/emotion)
what does the hypothalamus do?
controls ans, regulates endocrine system, produces hormones, controls appetite and thirst, envolved with emotion, bahavioural drives, role in rage pain pleasure arousal and drive, arousal, orgasm, and controls reflexes
what does the hypothalamus do?
controls ans, regulates endocrine system, produces hormones, controls appetite and thirst, envolved with emotion, bahavioural drives, role in rage pain pleasure arousal and drive, arousal, orgasm, and controls reflexes
what does the midbrain do?
communicates between cerebrum and cerebellum cerebral pundicles
what does the pons do?
links cerebrum with cerebellum and brain stem modifies the respiratory rate
what is the medulla oblongata?
contraction, regulates blood flow, relays visceral sensory info to the thalamus
what does the cerebellum do?
subconscious motor control (adjusts postural muscles) maintains balance equilibrium refines learned movement patterns
what does the longiotudal fissure do?
separates the right and left cerebral hemispheres
what does the transverse fissure do?
separates the cerebrum and cerebellum
what does lateral sulcus?
separates the parietal lobe and temporal lobe
what does the central sulcus do?
separates the frontal lobe and parietal lobe
what does the pre-central gyrus do?
primary motor cortex
what does the postcentral gyrus do?
primary sensory cortex
what does the frontal lobe do?
voluntary motor functions, mood, social adjustments, analysis, critical thought
what does the insula do?
taste:not as well studied or understood
what does the temporal lobe do?
hearing, learning, memory, and emotional behaviour
what does the parietal lobe do?
receives, integrates info about general senses touch pleasure pain temp
in cerebellum is grey mater superficail or deep to white matter
deep
what is the epidural space?
has blood vessels areolar and adipose
what is the subdural space?
narrow space not present in living person
subarachnoid space?
contains cerebral spinal fluid
what tissue are meninges formed from?
connective tissues
what two fluids are found in the dural sinuses?
CSF and blood
what are the three dural folds and there locations?
falx cerebri- within cerebrum
tentorium cerebellli- above the cerebrum like a tent
flax cerebelli- below cerebellum
where does the spinal cord end and begin?
medulla oblongata to coccyx
what is the cervical enlargement?
wider section of spinal cord where nerves to arms arise
what is the lumbar enlargement?
wider section of the spinal cord where nerves to legs arise
what is the connus medullaris?
cone-shaped end of spinal nerves
what are spinal nerve roots?
portion of nerves that enter/exit spinal cord
what does the central canal contain?
CSF
what is the fillum terminale?
extension of the pia mater that anchors the spinal cord to the coccyx
what is the cauda equina?
extension of the sacral and coccygeal nerves
