Welcome to Bio 111.211, Spring 2023
Anatomy and
Physiology 2 Lab
Friday 10am-1pm
Ac1, Rm 1117
Instructor
Getting Extra Help
Any time, Any day
email Jmclean2@sunyrockland.edu
In Person Office Hours
Ac1 Rm 1203, 1115
Jeff McLean, PhD
Jeff.McLean@sunyrockland.edu
Ph 845.574.4420*
M10-11am, T130-230pm, W10-11am,
Th130-230pm, F1-2pm
Bio 111
Anatomy and
Physiology 2
Lab
Week 1: TASTE and OLFACTION
•
Rockland Community College Bio110 Anatomy and Physiology 2 Lab
OLFACTION
Sense of Smell
• Olfaction detects airborne chemicals in
solution.
• Olfactory receptors are located in the the roof
of the superior nasal conchae in the nasal
cavity.
• Olfactory receptors contain cells with hairs.
OLFACTION
• The hairs are covered with mucus that is
secreted by olfactory glands.
• Mucus dissolves airborne odor molecules.
• Each odor is composed of hundreds of
chemicals.
• Olfactory receptors are “chemoreceptors”
stimulated by combinations of chemicals.
• Olfactory nerve fibers send impulses to the brain
along cranial nerve I (olfactory nerve/tract) to
identify the pattern of stimulation.
OLFACTION
Sagittal Section of the Nose
Olfactory nerve (tract)
cranial n. I
Cribriform plate
of ethmoid bone
Nasal conchae
Eustachian tube
Olfactory bulb
Olfactory sensory
neurons
Dogs have about 40x the area
for olfaction than humans
ETHMOID BONE
Cribriform plate
Openings for the
olfactory nerve (smell)
Perpendicular plate
Forms superior part of
nasal septum
Add to required structures.
Nasal conchae
Increase surface area of
mucous membrane
Groupwork:
A&P Lab
Activity –
Taste and
Smell
Pg 3-6
The sense of taste is called “gustation”.
umami - taste for the
specific amino acids
aspartate and
glutamate
TASTE
Pathway of taste impulses
• Cranial n. VII (facial n.)
transmits impulses from
the anterior 2/3 of the
tongue.
• Cranial n. IX
(glossopharyngeal)
transmits impulses
from the posterior 1/3
of the tongue.
Tongue Innervation
FACIAL NERVE
(CRANIAL NERVE VII)
Salivary reflex
Muscles of facial expression
GLOSSOPHARYNGEAL NERVE
(CRANIAL NERVE IX)
Salivation reflex
Groupwork:
A&P Lab
Activity – Taste
and Smell
Pg 7-11
Week 1 Homework
Finish: A&P Lab Activity – Taste and Smell pg 11-20
**Finish: GRADED QUIZ – Taste and Smell on VB**
Required terms and Structures:
Special senses
General sense
gustation
olfaction
Olfactory Epithelium
CN I Olfactory nerve
Olfactory bulb
Olfactory tract
Cribriform plate of Ethmoid
Cerebral Cortex
Hypothalamus
body of tongue
apex of tongue
root of tongue
median sulcus (of tongue)
frenulum (of tongue)
CNVII Facial nerve
CNIX Glossopharyngeal nerve
lingual tonsils
palatine tonsils
5 taste sensations
taste buds
microvilli
taste cell (gustatory cell)
Circumvallate papillae
fungiform papillae
filiform papillae
"structures containing taste buds(name at least 3)"