File:Human week 10 fetus 12.jpg

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Human Female Fetus - Olfactory Nerve (10 week)

Large image version of plane D, close to midline (Stain - Haematoxylin Eosin) 0.5 mm scale bar.

Olfactory Nerve - (CN I) formed from the nasal placode, the olfactory receptor neurons form an afferent nerve fibre transmitting the sense of smell to olfactory bulb (bulbus olfactorius).

Cranial Nerves
Nerve Number	Name	Type	Origin	Function
CN I	Olfactory	sensory	telencephalon	smell placode
CN II	Optic	sensory	retinal ganglial cells	vision
CN III	Oculomotor	motor	anterior midbrain	extraocular muscles eye movements and pupil dilation (motor)
CN IV	Trochlear	motor	dorsal midbrain	extraocular muscles (superior oblique muscle)
CN V	Trigeminal	motor/sensory	pons	touch, mastication
CN VI	Abducent	motor	extraocular muscles	control eye movements (lateral rectus muscle)
CN VII	Facial	motor/sensory	pons	facial expression, taste (tongue anterior and central regions) regulate salivary production.
CN VIII	Acoustic	sensory	vestibular and cochlear nuclei	hearing, placode
CN IX	Glossopharyngeal	motor/sensory	medulla	swallowing and speech, taste (tongue posterior region)
CN X	Vagus	motor/sensory	medulla	larynx and pharynx muscles (speech and swallowing), regulates heartbeat, sweating, and peristalsis
CN XI	Accessory	motor	motor neurons	sternocleidomastoid and trapezius muscles
CN XII	Hypoglossal	motor	motor neurons	tongue muscles (speech, eating and other oral functions)

Links: Cranial Nerve Development | Smell Development

Human Female Fetus (week 10)
Sagittal Section (plane D)
Pituitary and Lamina Terminalis
Olfactory Nerve
Atlas and Axis
Sacrum
Oral Cavity
Epiglottis
Heart
Spleen
Midgut Herniation
Midgut Herniation (label)
Pelvic Region
Pelvic Region (label)

Related Images

Fetus (week 10) Planes A (most lateral), B (lateral), C (medial) and D (midline) from lateral towards the midline.

Human Fetus - most lateral | lateral | medial | midline

Head - most lateral | lateral | medial | midline

Cerebellum - most lateral | lateral | medial | midline

Urogenital Unlabelled - most lateral | lateral | medial | midline

Urogenital Labelled - most lateral | lateral | medial | midline

Large Images - midline

Image Source: UNSW Embryology, no reproduction without permission.

Cite this page: Hill, M.A. (2024, April 27) Embryology Human week 10 fetus 12.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Human_week_10_fetus_12.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	23:29, 17 June 2012		1,200 × 900 (349 KB)	Z8600021 (talk \| contribs)	==Human Female Fetus Olfactory Nerve (10 week)== Large image version of plane D, close to midline (H&E stain). 0.3 mm scale bar Note: {{10wkFetus}}

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