40 + Human Body Parts That Start With A With Functions

There are many different human body parts that start with a letter, and each one has its own unique function. In this blog post, we will take a look at some of the most interesting parts of the body list that start with a letter.

There are so many, in fact, that keeping them all straight can be challenging. But one thing is for sure: every single one of them is essential for our survival! Here are some of the list parts of the body that start with a letter other than A.

Human Body Parts That Start With A(The Comprehensive List)

This comprehensive guide lists all the human body parts that start with the letter A – from arteries to axons. Discover their functions, locations, and more. Get ready to learn about anatomy in a whole new way.

Abdomen Abs Adams Apple
Arms Appendix Aorta
Achilles Acetabulum Areola
Achilles tendon Atlas Adenoid
Anterior ligament Anterior pelvis Anus
Ankle Achilles heel Adrenal glands
Ankle muscles Ascending aorta Annular ligament
Aortic Valve Abdominal arteries Abdominal cavity
Abdominal muscles Abdominal veins Abducent nerve
Ankle joint ligaments Anterior cerebral artery Arachnoid membrane
Accessory nerve Auditory tube Axillary artery
Anterior deltoid Arsehole Anal sphincter
Anterior communicating artery Anterior longitudinal ligament Anterior scalene muscle
Atlas vertebra Atrial appendage Amygdala



  • The main functions of the abdomen are to store and process food and to provide a space for vital organs such as the heart, lungs, and kidneys.
  • In addition, it also serves as a site for blood circulation and waste disposal.



  • The main functions of the abs in the human body are stabilization and movement. Stabilization helps maintain posture, balance, and core strength while movement helps with activities such as bending, twisting, and lifting.
  • In addition to these two primary functions, the abs also help protect organs from injury and absorb shock when doing physical activities.

Adam’s Apple:


  • It helps protect the throat during swallowing and it also helps control vocal pitch.
  • Adam’s apple is made up of cartilage and muscle which help to protect the throat during swallowing. This cartilage and muscle also help to control vocal pitch by controlling the size of our larynx.



  • They provide us with the ability to perform various tasks such as holding objects, writing and drawing, and even helping us move around.
  • aid you with (fine motor) motions that are little and exact, like wiggling your fingers or fastening a button.



  • it acts as a reservoir for bacteria that are found in the large intestine. This allows the body to fight off any potential infections.
  • It helps with the absorption of some vitamins and helps with the removal of waste from the body.



  • One of the aorta’s primary functions is to deliver oxygenated blood to the body’s tissues and organs.
  • It also plays a key role in removing carbon dioxide from the blood, which helps to maintain the body’s acid-base balance.
  • The aorta also helps to regulate body temperature by moving heat from the body’s tissues to the blood.



  • This allows the body to rotate and move in different directions without causing any pain or discomfort.
  • The acetabulum is also important because it helps to support the femur bone in the body.

Achilles Tendon:


  • it helps to support the heel bone, and it also helps to allow movement in the ankle joint.
  • The tendon helps to support the heel bone by providing a strong attachment point for the calf muscle, which pulls on the heel bone.



  • it provides a stable base for the skull to rest on.
  • it helps to keep our head upright and in balance with the rest of our body.
  • It also helps to absorb shock from physical activities such as running or jumping.



  • The main functions of the adenoid are to filter out airborne particles and bacteria and produce antibodies that help fight infection.
  • It also helps to regulate airflow in the nasal cavity and prevent mucus from entering your throat.

Anterior Ligament:


  • It plays a vital role in providing stability to the knee joint, as well as protecting it from injury.
  • It also helps to keep the knee joint aligned properly, which can help prevent pain and discomfort.



  • It serves as the exit point for digestive waste and also helps to regulate the control of gas and bowel movements.
  • In addition, the anus helps to protect against infection by preventing bacteria and other pathogens from entering the body through the rectum.

Achilles Heel:


  • It helps to protect the ankle joint from excessive movement or strain.
  • it plays an essential role in providing balance and stability when walking or running.

Adrenal Glands:


  • They produce hormones that regulate many bodily functions, including metabolism, stress response, blood pressure, and many more.
  • Cortisol helps the body to regulate its energy levels while adrenaline helps it to respond quickly to stressful situations.

Ascending Aorta:


  • It carries freshly oxygenated blood from the left ventricle to the rest of the body
  • It also helps regulate blood pressure with its elastic walls.

Aortic Valve:


  • It plays a vital role in regulating blood flow from the heart to the rest of the body.
  • It prevents the backflow of blood and maintains pressure in the aorta.

Abdominal Muscles:


  • These muscles play an important role in helping us maintain posture, balance, and movement.
  • They also help protect our internal organs and support our spine.

Abducent Nerve:


  • It is responsible for the lateral movement of the eye and helps to turn the eye outward, away from the nose.
  • This nerve also helps to control other muscles around the eye, such as those that control blinking and squinting.

Arachnoid Membrane:


  • It acts as a protective barrier between the brain and spinal cord and also helps to cushion them from any impacts or shocks.
  • This membrane plays a vital role in maintaining the health and functioning of the brain and spinal cord.

Auditory Tube:


  • It helps keep the air pressure in the middle ear balanced with the air pressure in the environment.
  • It helps drain fluid from the middle ear and prevents infection.

Anterior Communicating Artery:


  • It helps to provide blood supply to the front part of the brain.
  • as well as connecting the two cerebral arteries that are located on either side of the brain.

Anterior Longitudinal Ligament:


  • It plays an essential role in maintaining spinal stability and preventing excessive movement of the vertebrae.
  • It also helps to protect the spinal cord from injury by limiting excessive flexion, extension, and rotation of the spine.

Anterior Scalene Muscle:


  • One of the functions is to help with the flexion of the neck.
  • and to help with the rotation of the neck.

Atrial Appendage:


  • It helps to maintain blood flow and also acts as a reservoir for blood clots.
  • the atrial appendage can be very helpful in understanding how the heart works and how it can be affected by certain diseases.



  • It is responsible for processing fear, anger, and other emotional responses.
  • It also helps to store memories related to these emotions.

Frequently Asked Question

What Are The 5 Basic Parts of The Human Body?

 The human body is a complex organism with many different parts, but some of the most basic parts include

Head: The head contains the brain, which controls all bodily functions, as well as the eyes, ears, nose, and mouth.

Torso: The torso includes the chest, abdomen, and pelvis, and contains many important organs such as the heart, lungs, liver, stomach, and intestines.

Arms: The arms extend from the shoulders to the hands and include the upper arm, forearm, wrist, and hand. The hands contain many small bones and joints that allow for intricate movements.

Legs: The legs extend from the hips to the feet and include the thigh, shin, ankle, and foot. The feet contain many bones and joints that allow for balance and movement.

Spine: The spine is a long column of bones that runs down the back and protects the spinal cord. It allows for movement and supports the weight of the body.

These five basic parts of the human body work together to enable movement, breathing, digestion, and many other essential functions that keep us alive and healthy.

What Body Parts Do Humans Not Need?

There are some body parts in humans that are not essential for survival or can be removed without a significant impact on overall health. Some examples include

Appendix: The appendix is a small, finger-like pouch attached to the large intestine. Although it was previously thought to serve no purpose, recent studies suggest that it may play a role in immune function. However, the appendix can be safely removed if it becomes inflamed or infected.

Tonsils: Tonsils are small, round masses of tissue in the back of the throat that help filter out bacteria and viruses. However, they are not essential for overall health and can be removed if they become infected or enlarged.

Wisdom teeth: Wisdom teeth are the last set of molars to develop in the back of the mouth. Many people do not have enough room in their mouth for them to emerge properly, which can lead to pain and infection. In such cases, they can be safely removed without affecting overall health.

Male nipples: Although male nipples serve no biological function, they are a vestige of embryonic development when the gender of the fetus is not yet determined. However, they do not cause any harm and are not usually removed.

It’s important to note that while these body parts may not be essential for survival, they still serve some purpose or function in the body. Removing them should only be done if necessary and under the guidance of a qualified medical professional.

Final Words

We hope that this post was helpful and that you learned something new about human body parts that start with a! If you have any other questions about the human body, please let us know by commenting below.

We are always eager to share our knowledge with others and help them learn about the amazing and complex body we live in.

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