Anatomy of the Ear Quiz

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40 Questions

What is the process of converting one form of energy into another by sensory receptors known as?

Transduction

Which type of sensory receptor is very quickly adapting, especially with continuous stimulation?

Phasic receptors

What are nociceptors responsible for detecting?

Pain

Which type of receptor is responsible for responding to light in the eyes?

Photoreceptors

Where are exteroceptors primarily located in the body?

In the skin and mucous membranes

Which part of the eye is responsible for preventing light scatter and thus preventing blurriness?

Choroid

What is the function of the Ciliary muscle in the eye?

Changes the shape of the lens

Which part of the ear can become infected and potentially rupture due to middle ear infections?

Tempanic membrane

Which type of cells in the retina are highly sensitive to light but have decreased visual acuity?

Rods

What is the function of the pigment layer in the retina?

Prevent light scatter

Which gland secretes calcitonin to decrease the amount of calcium in the bloodstream?

Thymus gland

What is the role of parathyroid hormone (PTH) when the blood calcium level is low?

Increase bone resorption

Which system is the thymus gland primarily involved in?

Immune system

Which hormones are released by the adrenal medulla in response to stress, fear, and pain?

Catecholamines (epinephrine, norepinephrine, dopamine)

What is the main function of aldosterone released by the adrenal cortex?

Regulate electrolyte balance

What is the primary function of the outer ear in relation to sound?

Transmit sound waves to the eardrum

How does the ear protect the eardrum from bacterial growth?

By secreting lysozyme in the middle ear

Which part of the brain can be directly influenced by the olfactory cortex?

Amygdala

What is the unit used to measure loudness or amplitude of sound vibrations?

Hertz (Hz)

In terms of sound perception, what does pitch refer to?

The loudness or intensity of a sound

Where does the process of converting sound waves into electrical signals begin in the ear?

Oval window

Which part of the ear is responsible for maintaining posture and detecting angular acceleration?

Cristae ampullary

What type of fluid is found in the scala media of the cochlear duct?

Endolymph

Which structure in the ear is responsible for detecting linear acceleration and static equilibrium?

Vestibule

In the auditory pathway, where do 1st order neuron fibers leave the cochlea?

Cochlear nerve CNVIII

What is the function of the hypothalamus in the endocrine system?

Regulating water balance and thermoregulation

Which gland is ductless and secretes hormones directly into the bloodstream?

Endocrine gland

What happens in the case of high or low blood calcium levels to maintain homeostasis?

Activation of the parathyroid hormone

Which part of the eye is primarily affected by macula degeneration?

Retina

How do endocrine and nervous systems differ in terms of communication speed and duration of effects?

Endocrine system reacts slower but its effects last longer

What is the function of the pineal gland in the body?

Regulation of the circadian rhythm

Which hormone is known as the 'master gland'?

Growth hormone

What does dopamine inhibit in the body?

Prolactin

Which term is used to describe the 'seat of the soul' or 'third eye' in old terms?

Pineal gland

What is the primary function of oxytocin in the body?

Induction of labor contractions and milk ejection

Which hormone is involved in the emotional bonding between partners and mother-child bonding?

Oxytocin

What does TRH (Thyrotropin-releasing hormone) stimulate in the anterior pituitary gland?

Thyroid-stimulating hormone release

'Tropin' as a suffix signifies that a hormone is going to:

Stimulate another tissue to release hormone

'Somatostatin' primarily functions to inhibit the release of which hormone?

Growth hormone

What controls the release of antidiuretic hormone (ADH) and oxytocin from the posterior pituitary gland?

Neuroendocrine reflexes

Test your knowledge on the anatomy of the ear, including structures like the tympanic membrane, cochlear nerve, oval window, and semi-circular canals. Understand how sound waves are converted into electrical impulses for the brain to interpret.

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