Human Body Parts That Start With M | 20+ Words With Definition!

Human Body Parts That Start With M

A healthy body knows all its parts and functions, which is very important. This way, you can be sure to take care of them all! There are many different parts of the human body, and each one is important for keeping us healthy and strong. In this post, we’ll be talking about a few human body parts that start with M. We hope you enjoy learning about them!

Human Body Parts That Start With M

The first body part is the mouth. The mouth is responsible for eating and speaking. It is also essential for breathing, as it helps to bring air into the lungs. The following body part is the mammary gland, more commonly known as the breast. Let’s see some more parts of the human body start with M:

Male Genital OrgansMedial Palpebral LigamentMesenteric Arteries
MalleusMedial Pterygoid PlateMetacarpophalangeal Joint
Mandibular NerveMedial Rectus MuscleMiddle Cerebral Artery
Masticatory MusclesMedian NerveMiddle Cranial Fossa
Maxillary NerveMedian Nerve, Motor DistributionMidfoot
Maxillary Sinus (Antrum)MediastinumMovements
Maxillary Sinus (Antrum), Dry BonesMembranous LabyrinthMuscles
Maxillary Sinus (Antrum), OpeningMeningesMusculocutaneous Nerve

Discussion about the Parts

  • Male Genital Organs: Generally, male genital organs refer to the penis and scrotum. The penis is the longest and most visible part. It’s for urination and sexual intercourse. The scrotum is a pouch-like structure that hangs below the penis and contains the testes (or balls). It regulates sperm temperature.
  • Malleus: Malleus is one of the three bones in the middle ear. It is also known as the hammer bone because of its shape. The malleus attaches to the eardrum and helps transmit vibration from the eardrum to the inner ear. This bone is anchor-shaped and consists of a head, neck, and handle. 
  • Mandibular Nerve: The mandibular nerve is one of the three divisions of the trigeminal nerve, which is responsible for sensations in the face. The mandibular nerve innervates the lower jaw, teeth, and gums. It also controls the muscles used for chewing.
  • Masticatory Muscles: The masticatory muscles are the muscles of the face and head responsible for chewing. These muscles include the temporalis, masseter, and lateral pterygoid muscles. These muscles work together to move the jaw so that the teeth can grind food into smaller pieces that you can swallow.
  • Maxillary Nerve: The maxillary nerve is one of the 12 pairs of cranial nerves in the human body. It emerges from the brainstem and supplies sensation to the upper jaw, teeth, and gums. It also innervates the muscles that move the upper jaw.
  • Maxillary Sinus (Antrum): The maxillary sinus (antrum) is a pyramidal-shaped cavity in the skull in the upper jaw, right behind the nose. It’s one of four sinuses, which are air-filled cavities that help lighten the head’s weight and produce mucus to moisten and cleanse the airways.
  • Maxillary Sinus (Antrum), Opening: The maxillary sinuses are the largest paranasal sinuses located behind the cheekbones. They are separated from the orbits by thin layers of bone, and they open into the middle meatus of the nose. Each maxillary sinus has an ostium, or opening, a small hole in the thin layer of bone separating the sinus from the nasal cavity. The ostium is how air gets into the sinus and mucus drains out.
  • Medial Palpebral Ligament: The medial palpebral ligament is a thin, triangular band of fibrous tissue that connects the medial (inner) part of the eyelid to the eyeball. It helps to keep the eyelid from drooping and maintain the shape of the eye.
  • Medial Pterygoid Plate: The medial pterygoid plate is a small, triangular bone located in the back of the skull. It exists between the maxilla (the upper jawbone) and the braincase. The medial pterygoid plate forms part of both the hard palate and the skull base.
  • Medial Rectus Muscle: Among the six muscles responsible for controlling eye movements, the medial rectus muscle is one. The sclera starts on the inner surface of the orbit (the bony socket that houses the eyeball) and inserts into the sclera (that white outer coating).
  • Median Nerve: The median nerve connects the arm and hand. It is responsible for the sensation of touch in the palm and fingers. The median nerve also controls the muscles that allow the thumb and fingers to move. Damage to the median nerve can cause numbness, tingling, and weakness in the hand and fingers.
  • Median Nerve, Motor Distribution: The median nerve is a motor and sensory nerve that extends from the shoulder to the hand. It innervates the muscles of the arm and hand and provides sensation to the palm and fingers. The median nerve is responsible for making sure that your muscles work together properly when you move your hand and also helps you feel textures and shapes.
  • Mediastinum: The mediastinum is a structure in the human body that separates the lungs from the heart. It contains several essential organs, including the thymus gland, lymph nodes, and blood vessels. The mediastinum also includes the esophagus and trachea, which allow food and air to travel from the mouth to the lungs. Damage to any of these organs can be life-threatening.
  • Membranous Labyrinth: The membranous labyrinth is a system of fluid-filled passages in the inner ear that helps with balance and hearing. It consists of the vestibule, the cochlea, and three semicircular canals.
  • Meninges: There are three meninges in the human body: thin layers of tissue that surround and protect the brain and spinal cord. The dura mater is the outermost layer and is tough and fibrous. The next layer is the arachnoid mater, which is web-like and contains cerebrospinal fluid. The Pia mater is the innermost layer, a delicate membrane that closely follows the contours of the brain.
  • Mesenteric Arteries: The mesenteric arteries are a pair of large arteries that supply the intestines with blood. They originate from the abdominal aorta, just above where it splits to form the iliac arteries.
  • Metacarpophalangeal Joint: The metacarpophalangeal joint (MCPJ) is a hinged joint that connects the hand to the finger bones. Also known as the knuckle joint, it helps to give our fingers their wide range of motion.
  • Middle Cerebral Artery: The middle cerebral artery (MCA) is one of the three major arteries that supply blood to the brain. It arises from the internal carotid artery and runs along the lateral surface of the brain before dividing into two branches – the anterior cerebral artery and the posterior cerebral artery.
  • Middle Cranial Fossa: The middle cranial fossa is one of the three bones of the human skull. It resides below the brain’s surface and is just above the throat. The other two bones are the temporal bone and the sphenoid bone. The middle cranial fossa contains several essential nerves and blood vessels.
  • Midfoot: The midfoot is a term used to describe the middle part of the foot, containing five metatarsal bones. These metatarsal bones support the body’s weight and allow for movement in the feet.
  • Movements: A movement is any action or activity of the body that requires muscle groups. There are various types of movements, each with its distinct benefits. Here is a list of some common movement types: Aerobic exercise, Strength training, Balance exercises, Flexibility exercises 
  • Muscles: Our bodies have about 600 muscles, so we’ve got a lot of muscle tissue! Muscles make up approximately 40 percent of our body weight, enabling us to move, lift, breathe, and much more. They are essential for movement, but muscles also play an essential role in stabilizing our bodies and supporting our bones.
  • Musculocutaneous Nerve: The Musculocutaneous nerve is a peripheral nerve of the human body. This particular nerve provides motor innervation to a muscle called the Biceps Brachii. The only other place you’ll find this nerve is in dental patients- it’s responsible for providing sensation to the teeth!
  • Mylohyoid Muscle: The mylohyoid muscle is one of the human body muscles. It is a muscle that helps move the tongue and resides on the floor of the mouth. The mylohyoid muscle is essential for many tasks such as speaking, chewing, and swallowing. Without this muscle, it would be difficult to do these things correctly.


That’s it for our list of human body parts that start with M! Do you have a favorite body part that starts with M? Let us know in the comments below. And don’t forget to share this post with your friends and family – knowledge is power, after all!

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