Body Parts That Start With B

There’s hardly anything more magical in this universe than the gift of life.

From the moment we take our first breath until the day we die, many parts of our body work relentlessly to keep us alive.

It’s beyond impressive.

What’s also quite impressive is the number of body parts that starts with the letter B!

There are more than you can probably think of.

So, in this article, we’ll tell you about some parts of our body that help us be ourselves every day but also coincidentally begin with the second letter of the alphabet.

Now, let us get started!

The Most Common Body Parts Beginning With B


It’s often said that our intelligence is what sets us apart from all other living beings.

All of that comes from our brains.

This organ is beyond complex – we’re only starting to understand how it works.

Just a while ago, people believed we only use around 10% of our brains.

This has, since, been disproved, but a lot of our brain functions still remain a mystery.

The word itself isn’t just interesting because it starts with the letter B.

It’s derived from the Proto-Germanic bragna, that has been derived further from the Proto-Indo-European mregnom, which originally represented the human skull.

So, yes, the word is as old as our fascination with the organ itself.

Either way, we can’t talk about our brain without talking about its importance to our body.

Simply put, our brain controls the majority of our bodily functions: movement, breathing, growth, speech, problem-solving – almost everything that happens inside our bodies!

And it never stops working – not even when we’re asleep. It’s why we’re able to dream, among other things!

Overall, the brain is probably one of the most complex organs in the human body.

We could spend pages upon pages talking about it, and we wouldn’t even be scratching the surface.

Belly button

Our belly buttons are created the moment we are born – when our umbilical cord gets cut off.

They don’t exactly serve any purpose after we’re born, but they’re still a very interesting part of our body.

They also come in various shapes and sizes: they can be flat, sunken, or protrusive. It all depends on the way your umbilical cord was detached from your belly.

The word is pretty self-explanatory – it’s a small, button-shaped part of our abdomen.

It’s also called the navel or, in scientific terms, the umbilicus.

Either way, it’s a standard part of our body that starts with B.

It’s probably one of the first things that come to mind apart from the brain, which we talked about above.


The breasts serve different functions in men and women.

Female breasts are incredibly important organs that are used to nurse infants and help them develop into toddlers.

They also serve a sexual function, providing arousal during intercourse.

Male breasts, on the other hand, are mainly functionless, and much more muscular than female ones.

The medical term used to describe this organ is mamma, which comes from Latin, which is also where the term “mammals” comes from.

Either way, breasts come in various shapes and sizes and undergo many changes during our lifetime.

They’re also an extremely significant part of the human body, as they provide nutrition and food to infants.


The bladder is one of the most crucial parts of the human body.

It helps us get rid of toxins in our body, which keeps us healthy and prevents a variety of different illnesses.

Without it, we wouldn’t be able to survive for long, that’s for certain.

It’s located in the lower abdominal area of our torso, and it’s essentially a hollow organ.

As you probably already know, it’s where the urine (filled with toxins filtered by the kidneys) gets stored before we dispose of it by urinating.

It’s an incredibly important physiological process that keeps our bodies functioning at the highest possible level.

The common word, bladder, which starts with the letter B is not the only way to address this organ.

Medical professionals and scientists would instead use the Latin term vesica urinaria. 

No matter how you look at it, though, it’s a very interesting organ that’s essential to all human life.


This B-starting word is defined as a structure mainly consisting of calcium phosphate and collagen, which acts as a support to the human body.

In essence, our bones are what give our bodies their shape and structure.

Without bones, we would just be a big lump of meat and skin, with no ability to move.

We all start out at around 300 different bones as babies.

These later fuse and we get between 206-213 bones in total.

Some adult people may have extra ribs or vertebrae, which is why the number varies.

The most common number is 206.

Every single of these bones has its unique function, which is not something that can be covered easily.

Besides allowing movement, the bones also have a protective function inside the human body.


Another integral part of our body that starts with the letter B has to be blood.

It’s estimated that every human being has around 5 liters of blood in their body.

Our blood moves oxygen throughout our entire system, helping every one of our organs and muscles work as efficiently as possible.

Besides that, our blood also removes carbon dioxide from our organs, preventing the body from shutting down.

It’s safe to say this liquid is more than just an example you give when somebody asks you to name a word that starts with B.

We wouldn’t be wrong to say it’s actually the basis of all human life.

Just a small disturbance in our blood can make us incredibly sick.

As such, it’s a very powerful part of our body that needs to be taken care of with a proper lifestyle.


Believe it or not, a large number of bacteria are a natural part of our bodies.

They’re found on our skin, in our mouths, and in our digestive system – and there are millions of them inside our bodies!

They act as regulators and are a part of our lives from the moment we are born.

The word itself is of Greek origin, and it originally meant little sticks. 

In fact, a very large number of bacteria are somewhat stick-shaped, which is where the term comes from.

Either way, as unexpected as it may be, the bacteria inhabiting our bodies are as important as our organs, especially when it comes to our digestive system.

It’s why we often hear about “good bacteria” when we’re treating stomach aches and other issues we may have with our gut.

Whatever the case, it’s certainly an interesting part of the human body that deserves a mention in our list of body parts that start with the letter B.


While most of us can’t name scientific terms for the majority of the muscles inside the human body, we’ve all heard about the biceps.

It’s a muscle located in the upper part of the arm, which is considered to be an indicator of strength in many cultures.

Like the majority of the muscles, it’s typically more pronounced in men than in women.

Either way, the word itself is quite interesting from an etymological point of view.

It comes from the Latin biceps, which essentially means double-headed.

This can be associated with the outward appearance of the muscle itself.

Overall, it’s an incredibly important muscle that provides functionality to our arms, and as such, makes a great example of a human body part starting with B.


The brows, or eyebrows, are the small chunks of hair located above the eyelids.

Contrary to what you may think, our eyebrows are incredibly important – their aesthetical purpose is less than secondary.

They protect your eyes from sweat and harmful particles that may be sliding down your forehead.

Besides that, humans use their eyebrows to communicate, making them an important part of our subconscious body language.

They’re certainly one of the most underrated parts of the body begging with B, which is why we decided to put them on this list.

Other words that begin with B

Betz ligament membrane

Basilar Basal waves


Bartter’s index


Bile action

Basal ganglia

Basilar salts

Brain parathyroid metabolic glucose

Brown flow hormone



Basal mucosa

Basilar mass marrow


Body tendon


Basal glands

Bronchopulmonary cell



Brunner’s duct

Buccal rate

Basilar glands


Bile resorption

Broad mass

Bone fiber


Beta fat

Bulbourethral heat

Bundle system


Blastocyst stems


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