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Skeletal System

The skeletal system provides definite shape and mechanical support to the body, and it also helps in movement and locomotion. Ask questions about the skeletal system and bones here.

14,490 Questions

What do you call this the barrel shaped enclosure that extends around the chest from the back bone to the front of the body?

That is called the rib cage. It consists of the ribs, sternum, and thoracic vertebrae, and its main function is to protect the internal organs, such as the heart and lungs.

Joints between the carpal bones are?

The joints between the carpal bones are synovial joints, specifically gliding joints. These joints allow for small amounts of movement between the carpal bones to help with wrist flexibility and stability. The surrounding ligaments provide additional support to these joints.

Is it true that the pectoral girdle is formed by the articulation of the hip bones and the sacrum?

No - the pectoral girdle refers to the shoulders. The two bones that make up the pectoral girdle are the scapula and clavicle.

Why do get rib cage cramps spasms?

Rib cage cramps or spasms can be caused by a variety of reasons, such as muscle strain, dehydration, or overexertion. Poor posture, stress, or certain medical conditions like costochondritis can also contribute to rib cage cramps. It's important to stay hydrated, practice good posture, and stretch your muscles regularly to reduce the risk of experiencing these spasms. If the cramps persist or are severe, it's best to consult a healthcare professional for further evaluation and treatment.

Syndesmosis is a type of fibrous joint where the bones are held together ba an?

interosseous ligament, which connects the bones together and provides stability to the joint. It is commonly found in the ankle where the tibia and fibula are connected by this ligament. Injuries to the syndesmosis, such as a high ankle sprain, can lead to instability and pain in the joint.

What kind of joints are between proximal phalanges and metacarpal bones?

The joints between the proximal phalanges and metacarpal bones are known as the metacarpophalangeal joints. These joints allow for flexion, extension, abduction, and adduction of the fingers.

A rounded process that usually articulates with another bone is called?

A rounded process that usually articulates with another bone is called a condyle. Condyles are rounded projections at the end of a bone that form joints with other bones, allowing for smooth and stable movement.

The appearance of this structure signals the end of bone growth?

The appearance of the growth plate closure, also known as the epiphyseal line, signals the end of bone growth in long bones. This happens when the cartilage in the growth plate is replaced by bone, indicating that growth has ceased in that particular bone.

Inferior bone of the nasal septum?

The vomer is the inferior bone of the nasal septum. It is located in the midline of the nasal cavity, separating the left and right nostrils. The vomer articulates with the ethmoid bone superiorly and the maxillary bone anteriorly.

The acromion process articulates with what bone?

The acromion process articulates with the clavicle to form the acromioclavicular joint at the top of the shoulder.

The associated bones of the skull include what?

The associated bones of the skull include the mandible (jawbone), hyoid bone, and auditory ossicles (malleus, incus, and stapes).

What do the three smallest bones in your body do?

The smallest bones are the ear ossicles, three bones that are found in the middle ear. They are called the stapes ("stirrup"), incus ("anvil"), and malleus ("hammer"). The three ossicles transmit sounds from the air to the fluid-filled labyrinth (cochlea). Without these bones, you would have moderate to severe hearing loss. "Ossicles" litterally means "tiny bones."

Your funny bone ia actually a nerve named for what bone?

well the funny bone is the bone....but if you're wondering why its CALLED funny bone, then its because a part in the funny bone is called humerus and HUMERus (its like humor but misspelled)

How do calcium levels influence bone remodeling?

Calcium levels play a crucial role in bone remodeling by serving as a key component in bone mineralization. Adequate calcium levels help maintain bone density and strength, which is essential for the remodeling process. Low calcium levels can lead to decreased bone density and increase the risk of fractures due to impaired bone remodeling.

Describe bone physiology and the bone remodeling cycle?

Bone is broken down and built up all the time. This occurs on the surface of all bone types. About 10% of bone is replaced each year. Osteoblasts build bone. Osteoclasts break it down. Calcium is needed for this process.

Compare compact and spongy bone in macroscopic appearance structure and relative location?

Compact Bone in macroscopic appearance looks solid and dense.

Spongy bone in macroscopic appearance looks poorly organized.

compact bone in microscopic structure is riddled with passage ways that serve as conduits for nerves, blood vessels and lymphatic vessels.

Spongy bone is microscopic structure; the trabaculae in spongy bone align precisely along lines of stress and help the bone resist stress as much as possible.

Location of compact bone in the outer layer of short, flat and irregular bones and also in the diaphysis of long bones. Spongy bone location; in the inside of short, flat and irregular bones and also in the epihyses of long bones.

What does the skeletal framework of the neck consist of?

The neck is composed of several vertebrae that are stacked together. The vertebrae work together to protect the spinal cord from injury.
The skeletal framework of the neck consists of multiple stacked vertebrae. Sometimes an individual vertebra can pop out of place, causing pain. Chiropractic intervention can return bulging discs to their place.

The humerus articulates with what bone marking of the scapula?

marking or making?

Humerus bone makes joint with Clavicula and scapula

That is the shoulder joint

What are the four nerve plexuses?

Cervical: C1 - C5

Innervates muscles of neck and extend into thoracic cavity, where they control diaphragmatic muscles. Major nerve: Phrenic...which provides entire nerve supply to diaphragm.

Brachial: C5-T1

Innervates pectoral girdle and upper limbs. Major nerves: Radial nerve, median nerve, ulnar nerve.

Lumbar: T12 - L4

Innervates pelvic girdle and lower limbs. Major nerves: Genitofemoral nerve, lateral femoral cutaneous nerve, and femoral nerve.

Sacral: L4-S5

Innervates pelvic girdle and lower limbs. Major nerves: Sciatic nerve (which branches into tibial and fibular nerves) and pudendal nerve.

What bone is unpaired?

The hyoid bone is an unpaired bone in the human body. It is located in the neck and is unique because it does not directly articulate with any other bone. The hyoid bone plays a crucial role in supporting the tongue and providing attachment points for various neck muscles.

What structure in the knee prevents hyperextension?

The anterior cruciate ligament (ACL) is the primary structure in the knee that prevents hyperextension. It runs diagonally in the middle of the knee and helps stabilize the joint during activities that require sudden stops or changes in direction. Injury to the ACL can result in instability and an increased risk of hyperextension.

With what part of the hip bone does The head of the femur articulate?

The head of the femur articulates with the os coxa (pelvis) at the acetabulum. The acetabulum is the rounded socket that the head of the femur fits into. It also allows sliding of the pelvic bones and rotation. This joint is a synovial joint and is an example of a "ball-and-socket" joint.

What bone is the crista galli?

The crista galli is a bony ridge extending up from the ethmoid bone in the skull. It helps to support the olfactory bulb, which is responsible for the sense of smell.

Hemopoiesis is carried out in the?

Hemopoiesis, also known as hematopoiesis, is the process of blood cell formation. It primarily occurs in the bone marrow, specifically in the red bone marrow found in bones. Stem cells differentiate and develop into various blood cell types, such as red blood cells, white blood cells, and platelets, through hemopoiesis.