Smell Anatomy



http://antranik.org
http://antranik.org




The receptors for smell are called chemoreceptors because they respond to
chemicals that tie into the receptors, which are olfactory receptors. These smell receptors
are believed to be sensitive to a much wider range of chemicals. Smell and taste correspond
to each other and respond to a lot of the same stimuli. The olfactory bulb is responsible for relaying
sensory signals to the olfactory tract and the sense of smell. The olfactory bulb is in the limbic part of the brain.
The cribriform plate of the ethmoid bone is what the nerve fibers passes through it and the mucosa to the olfactory bulb.
The filaments of the olfactory nerve is in the olfactory portion of the nasal mucosa that go into the olfactory bulb. Once it gets there they cancel the synaptic contact with mitral cells, tufted cells, and granule cells. The lamina propria is connective tissue is a thin vascular layer of connective tissue beneath the epithelium tissue. Axons are the primary lines of the nervous system. Basal cell are
cells that divide to create new sensory neurons to replace the dead ones. These are the main parts of what parts make up the sense; smell!
The olfactory gland or the Bowman's gland is responsible





Animals sense of smell is much better than ours.

http://wikis.lib.ncsu.edu/index.php/Lopez,_Nixon,_Yang
http://wikis.lib.ncsu.edu/index.php/Lopez,_Nixon,_Yang



















Watch the video above about how smell works!!


http://www.aafp.org/afp/2000/0115/afp20000115p427-f2a.jpg
http://www.aafp.org/afp/2000/0115/afp20000115p427-f2a.jpg


Above this are the nasal passages in the nose, where the air goes through. They are called the inferior turbinate,
the middle turbinate and the superior turbinate. These are also known as the nasal concha, which was labeled in the
very first image on this wiki! They are responsible for regulating air flow, and making regular patterns. The septum is
what separates the left and right airways!
Smell Physiology



Citations:
Essentials of Human Anatomy & Physiology
Elaine N. Marieb
Publisher- Daryl Fox
Copyright 2006 Pearson Education, Inc.
p. 291