BIOS 1140 Exam 2: Worksheets

The brain region between the thalamus and the pons

midbrain

Name of the nerve structure that connects and provides communication between two hemispheres

corpus callosum

Cerebrospinal fluid is produced by the

ependymal cells lining the choroid plexus

Identify the structure that separates the lateral ventricles

septum pellucidum

Where are corpora quadrigemina located on the brain

posterior surface of midbrain, below thalamus

The cingulate gyrus is a major gyrus located ___ to the corpus callosum

superior

Identify the ventricle that is located between the cerebellum and the pons

fourth ventricle

Which meningeal layer can be palpated within the anterior fontanelle area

dura mater, outermost of the meninges

Which colliculus is at least partly responsible for us to turn our heads in the direction of a sound?

Inferior colliculus midbrain auditory structure

What structure of the brain is inferior to the occipital lobe and posterior to the pons region?

cerebellum

Fasciculus gracilis

transmits sensory information from lower body to cerebrum

Fasciculus cuneatus

transmits sensory info from upper body to cerebrum

Efferent

Nerves transmitting impulses away from CNS

Afferent

Nerves transmitting signal to the CNS

Exception to sympathetic-parasympathetic functions being opposed

penile erection (parasympathetic, first) and ejaculation (sympathetic, second)

Core of brain matter

white

Core of spinal cord matter

grey

What structures merge together to form spinal nerves

dorsal roots with sensory tracts and ventral roots with motor tracts

What part of the spinal cord at the distal end comes to a conical point before branching out

conus medullaris

The filum terminale extends distal from the cauda equina and attaches to what bony structure?

the coccyx

The ___ matter of the spinal cord from the horns, and ___ matter forms columns

grey, white

What part of white matter is primarily motor?

lateral white columns

What part of grey matter is primarily motor

anterior grey columns

What part of CN-VIII is involved in hearing

cochlear

What part of CN-VIII is involved in balance

vestibular

Which portion of the autonomic nervous system causes pupils to dilate

sympathetic response, begins in hypothalamus and acts on pupillae muscle

Which portion of the autonomic nervous system causes pupils to constrict

parasympathetic response, acts on sphincter pupillae

Affliction of which cranial nerve results in Bell’s Palsy

CN-VII, facial

Which cranial nerve innervates the majority of the thoracic and abdominal organs

CN-X, Vagus nerve

CNs involved in taste

Facial (VII), glossopharyngeal (IX), and vagus (X)

Cranial nerves the control extraocular eye muscles

Oculomotor (III), trochlear (IV), and abducens (VI)

The branches of the trigeminal nerve

Ophthalmic (sensory), maxillary (sensory), and mandibular (motor and sensory)

How many cranial nerves pass through the superior orbital fissure

four: III, IV, V, VI

The maxillary portion of the trigeminal nerve passes through what foramen

foramen rotundum

What part of the clavicle is connected to the manubrium

sternal

Lateral condyle of the humerus

capitulum

medial condyle of the humerus

trochlea

anterior fossa of humerus

coronoid fossa

posterior fossa of humerus

olecranon fossa

What is the major bulge on the humerus located lateral to the olecranon process of the ulna

Epicondyle: trochlea, medial, lateral

Name of the fossa located on the lateral, proximal edge of the ulna; radius articulates with this

radial notch

Bumps located on posterior, distal aspect of the radius

dorsal tubercles

Distal end of the radius articulates the most with what carpal bone

scaphoid and lunate; forms radiocarpal joint

What part of the ulna flexes into the coronoid fossa of the humerus

ulnar coronoid process

Metacarpal I articulates with

trapezius

Metacarpal II articulates with

trapezium

Metacarpal III articulates with

capitate

Metacarpal IV articulates with

hamate

Most lateral muscle of the antebrachium

brachioradialis

Muscle that is deep to the palmaris longus

flexor digitorum superficialis

Muscle lateral to the palmaris longus

flexor carpi radialis

Muscle medial to the palmaris longus

flexor carpi ulnaris

What two muscle is the extensor digit minimi located between

extensor digitorum and extensor carpi ulnaris

What portion of bicep brachii is most medial

the short head of the biceps brachii

Which portion of the triceps brachii is the deepest

medial head

Flexor digitorum superficialis originates on what part of the humerus

humeroulnar head

Generic name for muscles located between metacarpals

interossei muscles

Coracobrachialis muscle is located ___ to the biceps brachii

medial