The inner ear bones of mammals have evolved from bones that form the jaws of reptiles.

Biology

1 answer:

m_a_m_a [10]3 years ago

6 0

Answer:

auditory ossicles

Explanation:

In reptiles, the eardrum is connected to the inner ear via a single bone, the columella, while the upper and lower jaws contain several bones not found in mammals. Over the course of the evolution of mammals, one bone from the lower and one from the upper jaw (the articular and quadrate bones) lost their purpose in the jaw joint and were put to new use in the middle ear, connecting to the existing stapes bone and forming a chain of three bones, the ossicles, which transmit sounds more efficiently

You might be interested in

Which cell junction prevents the movement of solutes between the cells of an epithelial layer?

Fudgin [204]

Answer:

Gap junctions

Explanation:

Gap junctions form pores that connect adjacent cells. In this way signaling molecules, ions and other substances can pass through the pore to the adjacent cell. This type of cell junctions are important in cardiac muscle responses, in brain signaling, during childbirth, etc.

5 0

3 years ago

The nurse is caring for a client after surgery. the surgeon has written "resume pre-op meds" as an order on a client's chart. wh

Neko [114]

Call the doctor in the room

4 0

4 years ago

A(n) ________ is an interview conducted by a trained moderator among a small group of respondents in an unstructured and natural

monitta

A focus group is an interview conducted by a trained moderator among a small group of respondents in an unstructured and natural manner.

3 0

3 years ago

(PLEASE HURRY IM TIMED)The leaf shown has a color pattern of green and white

sdas [7]

C. The green part, because it contains chlorophyll

3 0

2 years ago

Tyrahn’s rods do not transform light into nerve impulses as easily and efficiently as they should, so he has difficulty seeing i

strojnjashka [21]

Answer:

This is called Night blindness.

Explanation:

It is also known as nyctalopia and is a vision impairment. this happens when the rods in the eyes do not transform light into the nerve impulses efficiently and easily than normal. As a result you will be having hard time seeing in dark places where there is only minimal light.

This is can be caused by cataracts, nearsightedness, usher syndrome or deficiency of vitamin A. These can be cured by certain procedures. To prevent developing this eye problem, it is important to take care of your eyes. you should monitor sugar levels and eat the right foods. foods that are abundant in vitamin A and other antioxidants would in preventing it.

5 0

3 years ago