5.5 Animal responses Flashcards
What are the two parts of the nervous system?
CNS and PNS
What are the two parts of the CNS?
brain and spinal cord
What are the two parts of the PNS?
Sensory system and motor system
What are the two parts of the motor system?
somatic and autonomic nervous system
What effectors are in the somatic?
voluntary skeletal; muscles (one neuron)
What effectors are in the autonomic?
glands, cardiac and smooth muscle (involuntary)
two neurons mostly unmyelinated
What are the two parts of the autonomic nervous system?
sympathetic and parasympathetic
Page 92 table
yay
Where is the cerebrum and what is its funciton?
the two halves of the brain, higher thought process (thought and memory)
Where is the cerebellum and what is its function?
back under the cerebrum, coordinates movement and balance
Where is the hypothalamus and pituitary complex and what is its function?
middle of brain, organises homeostatic responses and controls various physiological process
where is the medulla oblongata and what is its function?
middle going down, coordinates many autonomic responses
What are the nerves between the cerebrum?
corpus callosum
what is the outermost layer of the cerebrum called?
cerebral cortex
What sensory receptors are connnected to the cerebellum?
retina, balance organs in inner ear, spindle fibres in muscles
What are the cerebrum and cerebellum connected by?
pons
how is the posterior lobe of the pituitary gland connected to the hypothalamus?
specialized neurosecretory cells
what passes down the neurosecretory cells?
hormones produced in the hypothalamus such as ADH and released into blood
what do hormones from the anterior pituitary gland control?
stress, growth, reproduction and lactation
what does the anterior pituitary gland respond to?
releasing hormones
what 3 centres are controlled by the medulla oblongata?
cardiac
vasomotor
respiratory
what type of reflex is blinking?
cranial reflex
why does blinking occur?
- suddden bright light
- loud sounds
- foreign object
- sudden movement close to the eye
where does sensory input from the cornea go?
pons
relay - motor - facial
which part of the brain can inhibit blinking?
cerebreal cortex as myelinated vs unmyelinated relay neurons in pons
why type of reflex is the knee reflex?
spinal reflex
what muscle in the knee contracts to straighten
quadriceps
what detects and increase in muscle in the knee
muscle spindles
what can the knee freflex not be inhibitied>
it has no relay neuron to slow it down
