Question

List general responses to increased sympathetic activity and to parasympathetic activity.

Which neurons associated with olfaction are capable of regenerating?

What is the function of the auditory tube?

Describe the function of receptors in the saccule and utricle.

Name the fluids found within the vestibular duct, tympanic duct, and cochlear duct.

Beginning ar the external acoustic meatus, list the events in hearing.

Which layer of the eye would be the first affected by inadequate tear production?

What gives the eyes their characteristic color?

List the structures and fluids that light passes through from the cornea to the retina.

Identify the three types of cones.

please type it

Answer 1

Question 1: List general responses to increased sympathetic activity and to parasympathetic activity.

Answer: Following are the responses to the increased

Sympathetic System:

> Raise blood pressure.

>Increased peristalsis in the esophagus

> Decrease motility of the large intestine

> Constrict blood vessels

> Widens bronchial passages

> Perspiration

> Accelerates heart rate

Parasympathetic System:

> Slows the heart rate

> Increases intestinal and gland activity

> Relaxes sphincter muscle

Question 2: Which neurons associated with olfaction are capable of regenerating?

Answer: Olfactory Sensory Neurons

Question 3: What is the function of the auditory tube?

Answer: Function is as follows

> It controls the pressure within the middle ear, making it equal to the air pressure outside the body.

> Protection from the loud sounds.

> Protects, Aerates, and drains the middle ear

Question 4: Describe the function of receptors in the saccule and utricle.

Answer: The utricle and saccule are the two otolith organs in the vertebrate inner ear. They are part of the balancing system (membranous labyrinth) in the vestibule of the bony labyrinth (small oval chamber). They use small stones and viscous fluid to stimulate hair cells to detect motion and orientation.

Question 5: Name the fluids found within the vestibular duct, tympanic duct, and cochlear duct.

Answer: Endolymph.

Question 6: Beginning ar the external acoustic meatus, list the events in hearing.

Answer:

1. Sound waves arrive at the tympanic membrane

2. Movement of the tympanic membrane displaces the auditory ossicles

3. Movement of the stapes at the oval window applies pressure waves in the perilymph of the scala vestibule

4. Pressure waves distort the basilar membrane on their way to the round window of the tympanic duct

5. The vibration of the basilar membrane causes vibrations of hair cells against the tectorial membrane, results in the neurotransmitter release and stimulation of the sensory neurons

6. Information travels to the CNS over the cochlear branch of cranial nerve V VII to the medulla oblongata.

Question 7: Which layer of the eye would be the first affected by inadequate tear production?

Answer: Conjuctiva. Drying of conjuctiva will cause dryness in the eyes.

Question 8: What gives the eyes their characteristic color?

Answer: Depends on how much of the pigment Melanin you have in your iris.