Hypothalamus Vocab Flashcards
Humeral function of Hypothalamus
Influencing the body through endocrine changes
Visceromotor function of hypothalamus
Influencing body through changes in the sympathetic and parasympathetic nervous sytem
Somatic function of hypothalamus
Influencing the body through changes primarily in skeletal muscle
Motivational function of hypothalamus (4)
1.) Body temperature regulation
2.) Regulation of food/water intake
3.) Involvement in emotion and behavior
4.) Control of circadian rhythm
Pituitary Gland
Main connection of the hypothalamus and endocrine system. Command center of endocrine system
Magnocellular Neurosecretory Cells
Deliver neurohormones directly into blood vessels of the pituitary
Oxytocin
Released during sexual or social behaviors
Vasopressin
Released in cases of water deprivation and high salt concentration in the blood
Parvocellular Neurosecretory Cells
Connect hypothalamus to anterior lobe
Hormones
Chemical messengers that travel through the blood that can signal for a wide variety of cellular changes
Adrenocorticotropic Hormone
Stimulates releases of cortisol and other corticosteroids from adrenal glands
Adrenaline
Acts as excitatory neurotransmitter for many sympathetic nervous system pathways
Glycogen
Finite capacity in the liver and skeletal muscle
Triglycerides
Infinite capacity stored in adipose tissue
Adipose Tissue
Releases leptin into bloodstream
Leptin
Signals to arcuate nucleus of hypothalamus to reduce eating because adipose levels are normal
Autonomic Nervous System
A diffuse network of nerves that unconsciously control the internal function of the body
Sympathetic Nervous System
Readies the body in response to emergency
Parasympathetic Nervous System
Undoes the work of the sympathetic system
Nerves involved in parasympathetic system
Facial, Glossopharyngeal, Vagus
