Answer:
External auditory meatus
Explanation:
The pinna leads into the external auditory meatus which is a tube that directs sound waves to the tympanic membrane. The tube is lined with hairs which trap solid particles that may enter the ear. It is also lined by wax secreting cells whose function is to secrete wax that traps dust and prevents entry of solid particles. The wax also maintains the flexibility of the eardrum.
Answer:
The treadmill has quite a few parts and requires the most maintenance. The maintenance steps include cleaning the deck/motor cover, testing the stop button, vacuuming, checking lubrication, testing the belt tension, and tightening all nuts and bolts.
Answer:
1) Sambungan bola-dan-soket. 2) Sendi engsel. 3) Sambungan poros 4) Sambungan elips.
Penjelasan:
Sendi adalah daerah di tubuh kita tempat dua tulang saling menempel. Ada empat jenis sambungan 1) Sambungan bola dan soket. 2) Sendi engsel. 3) Sambungan poros 4) Sambungan elips. Sendi bola-dan-soket adalah sendi yang ada di bahu dan pinggul. Sendi engsel ada di pergelangan kaki, siku, dan lutut. Sendi poros ada di leher dan pergelangan tangan. Sendi elipsoidal ada di tangan dan jari.
Answer:
The respiratory epithelium in trachea and bronchi is pseudostratified and primarily consists of three main cell types – cilia cells, goblet cells, and basal cells. The ciliated cells are located across the apical surface and facilitate the movement of mucus across the airway tract.
When someone falls overboard, the action that skipper should take is to get flotation to the person and assign a spotter. <span>Have someone keep the victim in sight.</span>
