Anatomy of an Ear

Q.

Given below is the diagram of a part of the human ear. Study the same and answer the questions that follow :
(i) Give the collective biological term for Malleus, Incus and Stapes.
(ii) Name the parts labelled A, B and C in the diagram.

(iii) State the functions of the parts labelled 'A' and 'B'.
(iv) Name the audio receptor region present in the part labelled 'A'.

Q. What are the functions of hind brain?

Q.

Which part of the brain controls intelligence and memory?

1. Cerebrum

2. Cerebellum

3. Brain stem

4. Spinal cord

Q. What is the name of ear receptor?

Q.

Name the nerve which transmits the messages from ear to brain.

1. Auditory nerve

2. Optic nerve

3. Olfactory nerve

4. Mixed nerve

Q.

Which part of the ear is shaped like a snail shell?

1. Utricle

2. Eustachian tube

3. Semicircular canal

4. Cochlea

Q.

Match the following parts of the ear with functions

$\begin{array}{cc}ColumnI& ColumnII\\ i.\text{Pinna}& a.\text{Collects Vibrations in the air}\\ ii.\text{Cochlea}& b.\text{Region between Pinna and eardrum}\\ iii.\text{Meatus}& c.\text{Transfers vibrations to ear ossicles}\\ iv.\text{Tympanic membrane}& d.\text{Translates sound to nerve impulses}\\ v.\text{Eustachian tube}& e.\text{Equalises pressure between the inner and outer ear}\end{array}$

1. i).➡ a., ii).➡ d., iii).➡ b., iv). ➡ d, v). ➡ e.

2. i).➡ e., ii).➡ c., iii).➡ b., iv). ➡ a, v). ➡ d

3. i).➡ c., ii).➡ a., iii).➡ e., iv). ➡ c, v). ➡ d.

4. i).➡ d., ii).➡ e., iii).➡ a., iv). ➡ b, v). ➡ b.

Q.

Question 3
Which part of the brain maintains posture and equilibrium of the body?

Q.

Give biological reasons for the following.

Throat infections can lead to ear infections.

Q.

Cerebellum is responsible for

1. Interpreting sensations

2. Conducting reflexes in the body

3. Maintaining posture and equilibrium

4. Controlling, thinking, memory and reasoning

Q.

From the terms given below choose the parts that are involved in maintaining equilibrium in the body.

Eustachian tube, saccule, cochlea, utricle, vestibular nerve, cerebellum, oval window, semicircular canal

1. Eustachian tube, saccule, cochlea, utricle

2. saccule, cochlea, utricle, vestibular nerve, cerebellum, oval window

3. Saccule, utricle, vestibular nerve, cerebellum

4. Vestibular nerve, cerebellum, oval window, semicircular canal

Q.

The figure below is the sectional view of a part of the skull showing a sense organ :
(i) Name the sense organ.
(ii) What are the parts labelled "m", "i" and "s" ? What do these three parts constitute collectively?
(iii) What do you call the part shown in the form of a spiral? What is its function?
(iv) Name the part labelled "tm"? What is its function?

Q.

The organ of Corti in human beings is found in:

1. Tympanic canal

2. Cochlear canal

3. Vestibule canal

4. Eustachian tube

Q.

Name the part of the brain which is concerned with posture, equilibrium and muscle tone.

Q.

Ears of human are

1. Photoreceptors

2. Phonoreceptors

3. Olfactory receptor

4. Chemoreceptors

Q.

Memory and intelligence are controlled by

1. cerebrum

2. medulla oblangata

3. cerebellum

4. spinal cord

Q.

The three main parts of the ear contributing to hearing are

1. Eustachian tube, tympanum, utriculus

2. Cochlea, ear ossicles and tympanum

3. Semicircular canal, utriculus, sacculus

4. Perilymph, ear oscicles, and semicircular canal

Q.

Olfactory lobes are a part of:

1. Mid brain

2. Fore brain

3. Spinal cord

4. Hind brain

Q.

_________ part of the brain is associated with maintenance of body posture or equilibrium.

Q.

The given diagram represents the human ear. Name the part A in the diagram.

1. Eardrum

2. The Cochlea

3. Semi-circular canals

4. Ampullar

Q. Which of the following is not a part of the inner ear?

1. Eardrum

2. Sacculus

3. Utriculus

4. Cochlea

Q.

Mention the exact location of the given structure.

Organ of Corti

Q.

Name the following:

(a) The tube which connects the cavity of the middle ear with the throat.

Q.

Question 3
The brain is responsible for

(a) Thinking
(b) Regulating the heartbeat
(c) Balancing the body
(d) All of the above

Q.

Which part of the brain is also known as bottle neck of the brain? What is the function of this part?

Q.

Name the process/term for the statements given below:

(h) The part of the brain that maintains posture, equilibrium, and muscular toning?

Q. Part of the brain involved in maintaining posture is___ .

Q.

Cerebellum is associated with thinking and reasoning.

1. True
2. False

Q.

___ is the part of the brain that controls the body's equilibrium.

Q.

State the main function of the eustachian tube.