Glandular, nervous, & lymphatic systems, Embryology Flashcards
What is involved with the glandular tissue?
Lacrimal
Salivary
Thyroid
Parathyroid
Thymus glands
Structure that produces a chemical secretion necessary for normal body function
Gland
Gland that has a duct associated with it (exit sign)
Exocrine gland
A passageway that allows the secretion to be emptied directly into the location where the secretion is to be used
Duct
What gland is ductless and secretes hormones?
Endocrine gland
Paired, almond-shaped, exocrine glands that secrete lacrimal fluid (tears)
Lacrimal glands
Associated with dry eyes and mouth
Sjogren’s syndrome
Lubricates conjunctiva lining the inside of the eyelids and front of eyeball
Lacrimal glands
What are salivary glands controlled by?
Autonomic nervous system
What are salivary glands divided into?
Major
Minor
What are the major salivary glands?
o Parotid
o Submandibular
o Sublingual
o Largest major salivary gland
o Serous secretion (watery)
o 25% volume
Parotid salivary gland
What duct is associated with the parotid salivary gland?
Stensen’s duct
o Second largest major salivary gland
o Serous & mucous secretions
Slippery saliva
o 60-65% volume (#1 in saliva production)
Submandibular salivary gland
What is #1 in salivary production?
Submandibular salivary gland
What duct is associated with the submandibular salivary gland?
Wharton’s duct
What is the #1 side effect of the submandibular salivary gland?
Dry mouth
o Smallest, most diffuse, major salivary gland
o Mucous secretion
o 10% volume (least production)
Sublingual salivary gland
What duct is associated with the sublingual salivary gland?
Bartholin’s duct
o Smaller than the larger major salivary glands but are more numerous in number
o They are not individually encapsulated but surrounded by connective tissue within the submucosa
o <10% volume
o Exocrine glands
Minor salivary glands
Salivary stone
Sialolith
- Masses in salivary glands
- Painful
- May be removed surgically
Sialolith
Blood filled – purple/blue look
Ranula
Saliva filled – pink/clear
Mucocele
Dry mouth
Xerostomia
- Autoimmune disease
- Body dries out
Sjogren syndrome
Hard palate is whitened by hyperkeratinization
Nicotinic stomatitis
o Largest endocrine gland
o Secrete hormones
-Thyroxine
Thyroid gland
- Enlarged thyroid gland
- May be firm and tender
Goiter
- Underactive thyroid
- Weight gain
- Fatigue
Hypothyroidism
- Overactive thyroid
- Nervousness
- Insomnia
- Heart palpitations
Hyperthyroidism
o Consist of four small endocrine glands, two each side
o Because the glands are ductless, they produce and secrete hormones directly into the vascular system
o Not palpated or seen, too deep
Parathyroid glands
o Endocrine gland
o Makes & trains T-cells
Thymus gland
What are T-cells?
When do they form?
When do you have them by?
-Fighter cells
- Before birth
- The end of puberty
How many pairs of cranial nerves?
12
How many single cranial nerves?
24
All cranial nerves connect to the brain at the base and pass through the skull by ______
Foramina and fissures
Afferent
Sensory
Efferent
Motor
What are the types of nerves?
Afferent
Efferent
Mixed
Taking information from periphery and sending it to brain
* Smell
* Heat
Afferent nerves
Take information from brain to periphery to make a movement
Feel heat, then moves hand
Efferent nerves
Have sensory and/or motor function
Mixed nerves
What nerve is I?
Olfactory
Olfactory nerve
-Type?
-Function?
-Exits through?
-Sensory
-Smell to brain
-Through cribiform plate of ethmoid bone
What is nerve II?
Optic
Optic nerve
-Type?
-Function?
-Exits through?
-Sensory
-Sight to brain
-Through optic canal of sphenoid bone
What is nerve III?
Oculomotor
Oculomotor nerve
-Type?
-Function?
-Exits through?
-Motor
-Moves eyeball
-Through superior orbital fissure of sphenoid bone
What is nerve IV?
Trochlear
Trochlear nerve
-Type?
-Function?
-Exits through?
-Motor
-Moves eyeball
-Through superior orbital fissure of sphenoid bone
What is nerve V?
Trigeminal
-Opthalmic
-Maxillary
-Mandibular
Trigeminal nerves - OMM
-Type?
-Function?
-Exits through?
-Sensory
-Provides sensory information
-Through superior orbital fissure of sphenoid bone
What is the largest branch of the trigeminal nerve?
Mandibular branch
What is nerve VI?
Abducens
Abducens nerve
-Type?
-Function?
-Exits through?
-Motor
-Moves eyeballs
-Through superior orbital fissure of sphenoid bone
What is nerve VII?
Facial
Facial nerve
-Type?
-Function?
-Exits through?
-Mixed
-Facial expressions
-Through stylomastoid foramen of temporal bone
What is nerve VIII?
Vestibulocochlear
-Auditory
Vestibulocochlear (Auditory) Nerve
-Type?
-Function?
-Exits through?
-Sensory
-Hearing and balance
-Through external acoustic meatus