Chapter 2 The Bodys Physical Systems Flashcards
(16 cards)
Central nervous system consists of…
The brain & spinal cord.
Forebrain (uppermost part of the brain) consists of two main subdivisions.. The
Telencephalon & the diencephalon
Cerebrum, largest portion of the human brain… Includes cerebral cortex & controls..
Complex motor & mental activity.
Limburg system (2nd part of telencephalon)…
Not well understood yet, but believe me to be important emotional expression such as fear, anger or excitement.
Hypothalamus plays…
An important role in people’s emotions & motivation.
Cerebellum (lies at the back of the brain, below cerebrum)… Main function is to…
Coordinate our movement & maintain body balance.
Brainstem(lowest portion of the brain) consists of 4 parts…
Midbrain, pons, reticular system, & medulla.
2 main parts of peripheral nervous system…
Somatic & autonomic nervous system.
Somatic nervous system is involved in…
Both sensory & motor functions. Serving mainly the skin & skeletal muscles.
Autonomic nervous system…
Activates internal organs such as lungs & intestines & reports to the brain the current state and activity of these organs.
Sympathetic nervous system
Helps us mobilise & expand energy in responding to emergencies, expressing strong emotions & performing strenuous activity.
Parasympathetic nervous system regulates…
‘Quiet’ or calming processes. Helping our individual organ systems conserve & store energy.
Endocrine system
Communicates in close association with the nervous system through the use of chemical substance, called hormones.
Pituitary gland…
Gland that lies just below the hypothalamus. Releases hormones into the blood, stimulating other glands to selectively secrete chemicals. Master gland.
Adrenal glands
Located at top of kidneys… Release several important hormones in response to emergency & stress. (Cortisol, epinephrine & norepinephrine)
Neurotransmitter….
Impulses in a neuron travel through the axon & stimulate the synaptic knobs to release a chemical response, which travels to the dendrites of an adjacent neuron.
