InteractionOnline version Vocabulary. Unit 1 . Interaction by José Manuel Martín Pintado A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Starts with A One of the small bones in the ear. Starts with B Part of the brain connected to the spinal cord Starts with C Part of the ear that contains liquid and sends impulses to the brain. Starts with D Part of the skin between the epidermis and hypodermis Starts with E Part of the ear that vibrates to produce a sound Starts with F The longest bone in the human body Starts with G Muscle at the back of the body where you sit on. Starts with H Longest bone in the arm Starts with I Coloured part of the eye Starts with J The connection between two bones Starts with K Part between the femur and the tibia Starts with L Transparent part of the eye behind the pupil. Starts with M Bone in your head. Jawbone Starts with N Holes in the nose Starts with O Nerve related to the sense of sight Starts with P Muscles in your chest Starts with Q Big muscles in the leg. Starts with R The back of the eye Starts with S Taste of lemon Starts with T Muscle at the back of the arm which allows you to stretch it. Starts with U Bone in the arm next to the radius Contains V Another name for neuron Contains W Joint found in the arm Contains X Part of the neuron that sends information to other neurons. Contains Y Nerve in the ear that sends information to the brain. Contains Z Muscle you can find in the upper part of your back.