CDT Anatomy & Physiology Fundamentals 3

Question 1

The magnocellular pathway in the visual system is thought to be particularly relevant to dyslexia because it processes:

Accepted Answer

Rapid temporal changes and motion

Answer

The magnocellular pathway processes rapid temporal information and motion, and some researchers propose that magnocellular deficits contribute to the visual timing difficulties seen in some individuals with dyslexia.

Question 2

Which lobe of the brain contains the primary auditory cortex (Heschl's gyrus)?

Accepted Answer

Temporal lobe

Answer

Heschl's gyrus, the primary auditory cortex, is located on the superior surface of the temporal lobe within the lateral sulcus (Sylvian fissure).

Question 3

Which neurotransmitter is most closely associated with attention and focus, and is targeted by stimulant medications sometimes used in co-occurring ADHD?

Accepted Answer

Dopamine and norepinephrine

Answer

Stimulant medications used for ADHD primarily increase dopamine and norepinephrine availability in prefrontal circuits, improving attention and executive function.

Question 4

The inferior frontal gyrus (IFG) in the left hemisphere, also known as Broca's area, contributes to reading by:

Accepted Answer

Supporting phonological analysis and subvocal rehearsal

Answer

Broca's area (left IFG) is involved in phonological processing, articulatory rehearsal, and the assembly of phonemes during decoding, making it important for reading.

Question 5

Which part of the inner ear contains the hair cells responsible for transducing sound waves into neural signals?

Accepted Answer

Cochlea

Answer

The cochlea contains hair cells (inner and outer) that convert mechanical vibrations from sound waves into electrical neural signals transmitted via the auditory nerve.

(CDT) Certified Dyslexia Therapist Practice Test

(CDT) Certified Dyslexia Therapist Practice Test

CDT Anatomy & Physiology Fundamentals 3