BIOS 252
Exam 2: BIOS 252 (Latest Update )
Anatomy & Physiology II with Lab | Review
Questions with Verified Answers | 100% Correct |
Grade A - Chamberlain
1.layers of meninges (superficial to deep): dura mater, arachnoid mater, pia mater
2.dura mater: presses closely against cranial bones, no epidural space, not directly
attached to bone except around foramen magnum, sella turcica, crista gallis, and
sutures of the skull.
3.arachnoid mater: transparent membrane over brain surface, subarachnoid space
separates it from pia mater below
4.pia mater: very thin membrane
not usually visible
without microscope
follows all contours of
the brain
follows arteries as they penetrate into cerebrum
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5.blood brain barrier: layer around brain prevents things from entering and leaving,
made up of astrocytes.
6. 2 areas of the brain: wernicke: Speech - formulates phrases and transmits speech to
broca (left hemisphere)
Broca: Comprehends speech
7. Regions of the spine: Cervical: nerves located between ribs and skull (upper limbs)
Lumbar: L1 Spinal nerves gives sensation to groin helps...lower back - lower limbs
Thoracic: Nerves in top of chest, arm, hand (controls lungs,
diaphragm, rib cage, breathing) 8. cranial nerves: Sends electrical
signals between your brain, face, neck and torso.
Helps you taste, smell, hear and feel sensations, make facial expressions, blink your eyes
and move your tongue
(12 pairs of nerves)
9. sensory vs motor: sensory (afferent) carry signals from receptors to the spinal cord
and brain
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motor (efferent) carry signals from the central nervous system to effector organs
10. Lobes of the brain & responsibilities: Frontal: reasoning, planning, parts of speech,
movement, emotions, problem-solving
Parietal: movement, orientation, recognition, perception of stimuli
Occipital: visual processing
Temporal: perception and recognition of auditory stimuli, memory, and speech
11. What does the hypothalamus regulate: temperature
12. parasympathetic: rest and digest
13. sympathetic: fight or flight
14. neurotransmitter that's secreted by all parasympathetic preganglionic neurons:
acetylcholine
15. if you saw snake and quickly pulled away, what type of reflex is it?: flex or
withdrawal reflex because you're flexing your arm
16. Where is your visual cortex located: occipital
17. autonomic nervous system controls what: Cardiac muscle, smooth muscle, glands
BIOS 252