Body Parts That Start With B

If you’re looking for body parts that start with B, then this is the right website for you! The body is an amazing machine that performs many different functions. The body parts starting with the letter B are some of the more interesting body parts.

You can use this blog post to learn about all parts of the body that start with the letter B and provide examples of these body parts. So you can be a well-informed person who knows their ABCs!

There Are Plenty of Familiar Body Parts That Start With B

Human body parts that start with the letter b are important because they allow you to do all of your daily tasks. The body is a remarkable machine and there’s no way we could get by without these different body parts!

From protecting neuropsychiatric from germs to allowing us to walk around, the body has plenty of amazing body parts.

The letter B has many amazing body parts starting such:

  • Brain
  • Brain cells (neurons)
  • Brain stem
  • Brain cell
  • Backbone (spine)
  • Beauty bone (collar bone/clavicle)
  • Beard
  • Bronchi
  • Brachii
  • Bronchioles
  • Bronchus
  • Breast
  • Breast bone (sternum)
  • Biceps
  • Bones
  • Blood
  • Blood cell
  • Blood vessel
  • Brachial artery
  • Brachiocephalic artery
  • Belly
  • Belly button
  • Bladder
  • Bile duct
  • Breastbone
  • Breech
  • Bile
  • Bile duct
  • Biliary tract
  • Big toe
  • Bregma
  • Bronchial tubes
  • Bronchial cavity
  • Basilic vein
  • Basilic artery
  • Buccinator
  • Buccal cavity
  • Brow
  • Bum / Bottom / Buttocks
  • Bauhin’s glands
  • Brunner’s glands
  • Bronchopulmonary glands
  • Bulbourethral glands, etc.

Most Important Body Parts Starting With B: Explore the Anatomy

These parts of the body that start with b can be found in different areas of the body, but they’re all important body parts! This body part starts with “B” which is an interesting body part because it’s not always visible to others and requires some digging into the human anatomy.

Brain: The Brain is the master control panel. It has billions of connections and acts as a hub for all communication to and from the rest of the body.

It’s divided into four lobes: the left and right frontal, temporal, and occipital lobes, each in charge of certain functions that help us make sense of the information we receive through our five senses; namely what we see (temporal lobe), taste (parietal lobe), feel (sensory cortex crowning at the vertex), smell (olfactory tract leading up to olfactory bulb) and hear (angular gyrus).

The human brain takes up about 2%-3% percent of total body weight, yet it consumes close to 20% of total oxygen consumption at rest.


  • Directs the functions of our autonomic, motor, and sensory nervous systems.
  • Controls cognition, emotion, sensation, and type of action.
  • Controls our thoughts and responses to earlier memories.
  • Response to outside stimuli (such as light).
  • Muscle control (including largely voluntary muscle movements).
  • Coordination (for example walking).
  • Storing information for later use.
  • And other aspects of bodily function, etc.


  • Common disorders include headaches and migraines, which can be treated with medication.
  • Severe mood changes may be caused by depression or bipolar disorder, which are common diseases.
  • Neuropsychiatric disease is a disturbance in mental functions which are often caused by psychiatric illness, poor nutrition, drugs or chemical imbalances, etc.

Backbone: The backbone is the large, complex, interconnected system of vertebrae running from the skull to the tailbone. It’s made up of 24 vertebrae, and 32 joints. Some other common names for this part are the vertebral column, spinal column, and spine.

This system protects bacteria or viruses invading organs in front of it (such as the heart, lungs, and trachea) and those behind it (such as the spinal cord).

The spine also acts as a site of nutrient transportation through its concave curvature that allows for drainage into blood vessels within each vertebra.


  • Protect the central nervous system and enclose and protect the spinal cord.
  • The spine’s curvature provides space for many structures including nerves, blood vessels, and dorsal root ganglia.
  • Also provides structural stability to the body, etc.


  • Injuries to ligaments lead mostly to back pain and spinal instability.
  • Injuries to discs can also cause lumbar spine problems.
  • Anxiety can also be a cause of back strain, etc.

Breast: The breast of the human body is the upper, front part of the chest that contains the mammary glands. It is made up of adipose tissue, glandular tissue, and stroma tissue.

The breast (from Middle English “breast” – breast) or mamma (/mæm/) is either of a female’s two organs that produce milk to feed an infant through breastfeeding or that provide nourishment when no baby is present.

These serve mammalian infants for nutrition and hydration, though they may also produce vernixcaseosa when there are birth defects in their development.


  • The main function of the female breast is to secrete milk (lactation) for feeding an infant;
  • Other functions of mammae are sexual stimulation and physical support against downward pressure on the diaphragm caused by obstructed breathing.


  • Breast Cancer-Carcinoma Breast Cysts of nursing women.
  • The disease of Prostatic Strips – male breast cancer.
  • Female thoracic duct disease juvenile mammary gland disease.

Blood: On average, blood is composed of 55% water, 43% various cells (red blood cells – RBCs or erythrocytes; the most abundant cell type in the human body by number, white blood cells – WBCs or leukocytes; there are normally five different types of leukocyte subgroups in adults), 3% platelets.

The most important component of whole blood outside of fluid is platelets. For any bleeding to happen, platelets must aggregate around the damaged area.

This happens thanks to chemical processes where serotonin binds with particular receptors on their surface called serotonin 5-HT3 receptors that trigger changes that initiate clot formation.


  • Carries the Oxygen from the lungs to all other organs in the body to all cells in it.
  • Transports nutrients for these cells up to the brain, which includes the removal of wastes from them too.
  • Takes away Carbon Dioxide from all parts of the body and carries them back to the heart for exchange with Oxygen.
  • Provides immunity against organisms when it comes in contact with our skin or if there are bacteria or viruses invading the bloodstream.
  • Blood carries coagulation factors that control the process of blood clotting when an injury occurs.


  • Leukemia cells accumulate in the bone marrow and cause abnormal production of red blood cells or white blood cells (neutrophils).
  • Lymphomas arise from immature forms (lymphoblasts) and accumulate in lymph nodes and other glands.
  • Multiple myeloma develops from plasma cells associated with the bone marrow; these produce antibodies against antibodies, fever after vaccinations or fever after injuries, and a general feeling of weakness.
  • Patients with myelofibrosis have a high number of sickle-shaped forms (acrania) in their bone marrow. The causes for such malignancies can be precise.
  • Anemia-deficiency of red blood cells and hemoglobin in body fluids.
  • Hemophilia – inability to produce or use factors that control the process of blood clotting.

Bones: Bone is the hardness that supports our body. Bones are composed of an organic-inorganic composite that includes a type of material called hydroxyapatite, which gives bones their resistance to breakage and rigidity.

Bone also contains a substance called collagen, which makes up about 30% of bone volume and provides strength as well as elasticity.

The other 70% of bone is porous sponge-like tissue containing many small spaces or holes. This tissue serves as a reservoir for circulating blood cells and facilitates both the adaptation of bones to changes in the environment (such as climbing mountains) and postural reflexes.


  • Providing physical support and protection for all the internal organs.
  • Maintain the body’s shape and store minerals, such as calcium and phosphorus.
  • Many deciduous (baby) teeth are anchored in the bone so they can grow properly before breaking loose when they come in at 21-28 months.
  • They can be used to produce blood cells.


  • Osteoporosis is a disease of the skeletal system that can lead to more direct forms of degeneration such as osteoarthritis and impaired heel bone function.
  • Bone cancer – usually in the thigh bone (femur) with pain and swelling near the knee.


This is not a comprehensive list of body parts that start with the letter B, but it should give you some ideas to get started. And don’t worry if your favorite part starts with an A or any other letter – there are plenty more out there waiting for you! Let us know what else we can help you find by commenting below.

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