Salivary Secretion

Question 1

Name the main components or enzymes found in saliva. (3)

Answer 1

Components of Saliva:
Salivary alpha-amylase
Lingual lipase
Kallikrein

Question 2

Salivary alpha-Amylase:
Function. (1)
Source. (1)
Glands. (2)

Answer 2

Salivary alpha-Amylase:
Digests starch
Secreted by acinar cells
Secreted from parotid and submandibular glands

Question 3

Lingual Lipase:
Function. (1)
Source. (1)
Glands. (1)

Answer 3

Lingual Lipase:
Digests fat
Secreted by acinar cells
Secreted from sublingual gland

Question 4

Kallikrein:
Function. (1)
Source. (1 and possibly 2)
Glands. (3)

Answer 4

Kallikrein:
Regulates local blood flow
Secreted by acinar (and possibly duct) cells
Secreted from parotid, submandibular and sublingual glands

Question 5

Name the neurotransmitters controlling salivary secretion. (3)

Answer 5

Neurotransmitters controlling salivary secretion:
ACh
SP
Norepinephrine (NE)

Question 6

Acetylcholine:
Nervous system division pathway. (1)
Receptor. (1)
Intracellular pathway stimulated. (1)
Effected property of saliva. (1)

Answer 6

ACh:
Parasympathetic nervous system
Muscarinic (M3) receptor
Ca2+ pathway
More fluid

Question 7

Substance P:
Nervous system division pathway. (1)
Receptor. (1)
Intracellular pathway stimulated. (1)
Effected property of saliva. (1)

Answer 7

SP:
Parasympathetic nervous system
Tachykinin NK-1 receptor
Ca2+ pathway
More fluid

Question 8

Norepinephrine:
Nervous system division pathway. (1)
Receptors. (2)
Intracellular pathways stimulated. (2)
Effected property of saliva. (2)

Answer 8

NE:
Sympathetic nervous system
alpha- and beta-adrenergic receptors
Ca2+ pathway (alpha) and cAMP pathway (beta)
More fluid (alpha) or more protein (beta)