Chapter 1.8 (page 15) Flashcards
_________ is a connective tissue which surrounds the axon of the nerve.
Endoneurium
Fascicles are wrapped by connective tissue called _________.
Perineurium
The entire nerve is covered by this connective tissue called _________.
Epineurium
The Peripheral Nervous System (PNS) has two types of nerves:
Cranial Nerves
Spinal Nerves
TRUE or FALSE:
There are 31 spinal nerves and they supply all parts of the body.
FALSE.
They don’t supply the head.
Provide the numbers:
_ pair/s of cervical spinal nerves
_ pair/s of thoracic nerves
_ pair/s of lumbar nerves
_ pair/s of sacral nerves
_ pair/s of coccygeal nerves
8
12
5
5
1
Ventral roots contain somatic and autonomic motor fibres, which arise from the ______ and ______ horns respectfully. Dorsal roots contain sensory fibres, arising from sensory neurons in the ______________.
Anterior and Lateral
Dorsal Root Ganglia
A _______ is a segment of skin supplied by either a cranial or spinal nerve.
Dermatome
Cranial Nerve XII (Hypoglossal Nerve) functions to:
Control tongue movements
This is a Cranial Nerve with Motor functions to aid in Head and Shoulder movements.
Accessory Nerve (CN XI)
Cranial Nerve III is called _____________ and it controls _________________ (Motor).
Oculomotor Nerve
Eye movements
Voice Production is one of the functions of the _______________ (CN).
Vagus Nerve (CN X)
(Other functions are increasing peristalsis and slowing heartbeat)
The ______________ (CN) is responsible for chewing food.
Trigeminal Nerve (CN V)
The Cranial Nerve VIII has the function of ___________ and ________________.
Hearing
Sense of Balance
(CN VIII is also termed as Vestibulocochlear Nerve)
The ______________ (CN) is mainly responsible for secretion of saliva.
Glossopharyngeal Nerve (CN IX)
TRUE or FALSE:
Cranial Nerve II, Optic Nerve, is responsible for moving the eye externally.
FALSE.
CN II is responsible for vision. CN VI is responsible for moving the eye externally (abduct).
TRUE or FALSE:
Cranial Nerve VII has no motor function.
FALSE.
Facial Nerve (CN VII) is responsible for facial expressions.
What are the two subdivisions of the Peripheral Nervous System (PNS)?
The Sensory (Afferent) Division
The Motor (Efferent) Division
These are nerves that convey impulses from the skin, skeletal muscles and joints.
Somatic Afferent
The Visceral Afferent nerves are responsibe for conveying impulses from _____________ to higher centers.
Visceral Organs
The motor (efferent) division consists of nerve fibres that transmit impulses from the CNS to ____________.
Effector Organs
The motor division of the PNS has two divisions, what are these?
Somatic Nervous System
Autonomic nervous system
