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Increased pressure within the carotid sinus decreases
A Sympathetic tone
B Heart rate
C Cardiac contractility
D Pulmonary ventilation
E Diameter of blood vessel
Carotid sheath
A Is attached superiorly to the base of the skull
B Fuse with the perichondrium inferiorly
C Encloses jugular vein and vagus nerve
D Lies deep to the prevertebral fascia
E Encloses external carotid artery
The carotid sheath
A Is attached superiorly to the base of the skull
B Is fused with the pericardium inferiorly
C Encloses the jugular vein
D Lies deep to the prevertebral fascia
E Contains the external carotid artery
Internal carotid artery
A Enters the skull through the foramen lacerum
B Divides into the anterior and middle cerebral arteries
C Gives of the ophthalmic artery
D Is accompanied within the skull by preganglionic sympathetic nerve fibres
E Usually beings at the level of fourth cervical vertebra
Veins drain into the coronary sinus are
A Great cardiac vein
B Middle cardiac vein
C Small cardiac vein
D Anterior cardiac vein
E Venaecordis minimae
Tributaries of the cavernous sinus include
A Sphenoparietal sinus
B Superficial middle cerebral vein
C Superior ophthalmic vein
D Superior petrosal sinus
E Deep facial vein
Maxillary sinus
A Develops in intrauterine life
B Opens in the middle meatus
C Is rectangular in shape
D Is supplied by the vagus nerve
E Attains full size at adult life
The maxillary air sinus
A Opens into the middle meatus of the nose
B Is innervated by the superior alveolar nerves
C Is rudimentary at birth
D Contains the infraorbital nerve in its roof
E Is lined by the columnar non-ciliated epithelium
Superior sagittal sinus
A Has arachnoid villi
B Occupies the upper border of falx cerebri
C Lies between dura mater and arachnoid mater
D Is formed by union of great cerebral vein and superior cerebral vein
E Forms the right transverse sinus
Dural venous sinus
A Is devoid of muscular tissue
B Is located within the dural folds
C Receives venous blood from the ear
D Drains into the external jugular vein
E Is provided with valves

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