BCMB 230 Lecture Notes - Lecture 14: Phrenic Nerve, Vagus Nerve, Cranial Nerves
16 Dec 2016
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10/4/16: NOTES
• There are muscarinic and alpha beta receptors on the heart
• Smooth muscle in the face
• Plasma glucose levels go up in fight-or-flight response. Extra energy. Burn thru exercise
or nervous ticks
• Sweat- smooth muscle in the skin- erector pili muscles- make hair stand up? Why?
Insulation. Only sympathetic goes to the skin. No muscuraninc receptors in the skin
• Places that have both sympathetic and parasympathetic are better controlled
• Parasympathetic- goes to the viscera and the face
• 12 cranial nerves
o 4 autonomic- parasympathetic
o Know nerve 10 the Vagus nerve. Main parasympathetic nerve
• Sympathetic Trunk- A series of sympathetic ganglia. Connections between pre-
ganglionic and post-ganglionic fibres
SOMATIC MOTOR
Nerve in the neck, phrenic nerve, that controls the diaphragm.
Diaphragm is skeletal muscle- You a otrol our reathig. Loated i the isera, ut it’s
not smooth muscle.
Most nerves are next to the part of the body they control Nerves of the arm by the arm
EXAM STRUCTURE: NEUROTRANSMITTERS, RECEPTORS, CONTROLLED BY SYMPATHETIC OR
PARASYMPTAHETIC?
Sympathetic
Fight or flight
Running up stairs?
What are you using?
Heart? Are you going to be storing fat?
Ask yourself what systems will be activated?
• Sympathetic response can be excitatory or inhibitory. Depends on the organ.
AFFERENT SYSTEM
Taste (gustatory system)
Papilla- Taste buds- Contain chemoreceptor for 5 basic tastes
1. Sweet
2. Sour
3. Bitter
4. Salty
5. Umami (savory)
How do we taste thousands of different things?
Law of proportions
Multiple receptors are triggered by a food. The mixture creates a unique taste
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Document Summary
10/4/16: notes: there are muscarinic and alpha beta receptors on the heart, smooth muscle in the face, plasma glucose levels go up in fight-or-flight response. No muscuraninc receptors in the skin: places that have both sympathetic and parasympathetic are better controlled, parasympathetic- goes to the viscera and the face, 12 cranial nerves, 4 autonomic- parasympathetic, know nerve 10 the vagus nerve. Main parasympathetic nerve: sympathetic trunk- a series of sympathetic ganglia. Nerve in the neck, phrenic nerve, that controls the diaphragm. Diaphragm is skeletal muscle- you (cid:272)a(cid:374) (cid:272)o(cid:374)trol (cid:455)our (cid:271)reathi(cid:374)g. lo(cid:272)ated i(cid:374) the (cid:448)is(cid:272)era, (cid:271)ut it"s not smooth muscle. Most nerves are next to the part of the body they control nerves of the arm by the arm. Exam structure: neurotransmitters, receptors, controlled by sympathetic or. Ask yourself what systems will be activated: sympathetic response can be excitatory or inhibitory. Papilla- taste buds- contain chemoreceptor for 5 basic tastes: sweet, sour, bitter, salty, umami (savory)
