Biology, asked by chanchalpal288, 9 months ago

Make a list of various bones in our body and ✏write✏ their functions​

Answers

Answered by keya4543
2

Answer:

The axial skeleton, comprising the spine, chest and head, contains 80 bones. The appendicular skeleton, comprising the arms and legs, including the shoulder and pelvic girdles, contains 126 bones, bringing the total for the entire skeleton to 206 bones.

Spine (vertebral column) Edit

A fully grown adult features 26 bones in the spine, whereas a child can have 34.

Cervical vertebrae (7 bones)

Thoracic vertebrae (12 bones)

Lumbar vertebrae (5 bones)

Sacrum (5 bones at birth, fused into one after adolescence)

Coccygeal vertebrae/Cordal (set of 4 bones at birth; some or all fuse together, but there seems to be a disagreement between researchers as to what the most common number should be. Some say the most common is 1, others say 2 or 3, with 4 being the least likely.[citation needed] It is counted as 1 in this article.

Chest (thorax) Edit

Various bones of the human skeletal system.

There are usually 26 bones in the chest but sometimes there can be additional cervical ribs in humans. Cervical ribs occur naturally in other animals such as reptiles.

Hyoid bone (1)

Sternum (1 or 3)

Ribs (24, in 12 pairs)

Cervical ribs are extra ribs that occur in some humans.

Head Edit

There are 22 bones in the skull. Including the bones of the middle ear, the head contains 28 bones.

Cranial bones (8)

Occipital bone

Parietal bones (2)

Frontal bone

Temporal bones (2)

Sphenoid bone (sometimes counted as facial)

Ethmoid bone (sometimes counted as facial)

Facial bones (14)

Nasal bones (2)

Maxillae (upper jaw) (2)

Lacrimal bone (2)

Zygomatic bone (cheek bones) (2)

Palatine bone (2)

Inferior nasal concha (2)

Vomer (1)

Mandible (1)

Middle ears (6 bones in total, 3 on each side)

Malleus (2)

Incus (2)

Stapes (2)

Arm Edit

There are a total of 64 bones in the arm.

Upper arm bones (6 bones in total; 3 on each side)

Humerus (2)

Pectoral girdle (shoulder)

Scapula (2)

Clavicles (2)

Lower arm bones (4 bones in total, 2 on each side)

Ulna (2)

Radius (2)

Hand (54 bones in total; 27 in each hand)

Carpals

Scaphoid bone (2)

Lunate bone (2)

Triquetral bone (2)

Pisiform bone (2)

Trapezium (2)

Trapezoid bone (2)

Capitate bone (2)

Hamate bone (2)

Metacarpals (10 bones in total; 5 on each side)

Phalanges of the hand

Proximal phalanges (10 bones in total; 5 on each side)

Intermediate phalanges (8 bones in total; 4 on each side)

Distal phalanges (10 bones in total; 5 on each side)

Pelvis (pelvic girdle) Edit

The pelvis (or hip bone) is made up of three regions that have fused to form two coxal bones. They are: ilium, ischium, and pubis

The sacrum and the coccyx attach to the two hip bones to form the pelvis, but are more important to the spinal column, where they are counted.

Leg Edit

There are a total of 60 bones in the legs.

Femur (2 bones)

Patella or kneecap (2 bones)

Tibia (2 bones)

Fibula (2 bones)

Foot (52 bones in total, 26 per foot)

Tarsus/Tarsals

Calcaneus or heel bone (2 bones)

Talus (2 bones)

Navicular bone (2 bones)

Medial cuneiform bone (2 bones)

Intermediate cuneiform bone (2 bones)

Lateral cuneiform bone (2 bones)

Cuboid bone (2 bones)

Metatarsals (10 bones)

Phalanges of the foot

Proximal phalanges (10 bones)

Intermediate phalanges ( 8 bones)

Distal phalanges ( 10 bones)

Answered by 03152580417
0

Answer:

BONES

Explanation:

The human skeleton of an adult consists of around 206 to 208 bones, depending on the counting of the sternum (which may alternatively be included as the manubrium, body of sternum, and the xiphoid process)[1] It is composed of 270 bones at birth, but later decreases to 80 bones in the axial skeleton and 126 bones in the appendicular skeleton. Many small accessory bones, such as some sesamoid bones, are not included in this count.

Contents

1 Introduction

2 Bones

2.1 Spine (vertebral column)

2.2 Chest (thorax)

2.3 Head

2.4 Arm

2.5 Pelvis (pelvic girdle)

2.6 Leg

3 See also

4 References

Introduction

As a human ages, some of its bones fuse, a process which typically lasts until sometime within the third decade of life. Therefore, the number of bones in an individual may be evaluated differently throughout their life. In addition, the bones of the skull and face are counted as separate bones, despite being fused naturally. Some reliable sesamoid bones such as the pisiform are counted, while others, such as the hallux sesamoids, are not.

Individuals may have more or fewer bones than the average (even accounting for developmental stage) owing to anatomical variations. The most common variations include sutural (wormian) bones, which are located along the sutural lines on the back of the skull, and sesamoid bones which develop within some tendons, mainly in the hands and feet. Some individuals may also have additional (i.e., supernumerary) cervical ribs or lumbar vertebrae.

Bones

The axial skeleton, comprising the spine, chest and head, contains 80 bones. The appendicular skeleton, comprising the arms and legs, including the shoulder and pelvic girdles, contains 126 bones, bringing the total for the entire skeleton to 206 bones.

Spine (vertebral column)

A fully grown adult features 26 bones in the spine, whereas a child can have 34.

Cervical vertebrae (7 bones)

Thoracic vertebrae (12 bones)

Lumbar vertebrae (5 bones)

Sacrum (5 bones at birth, fused into one after adolescence)

Coccygeal vertebrae/Cordal (set of 4 bones at birth; some or all fuse together, but there seems to be a disagreement between researchers as to what the most common number should be. Some say the most common is 1, others say 2 or 3, with 4 being the least likely.[citation needed] It is counted as 1 in this article.

Chest (thorax)

Various bones of the human skeletal system.

There are usually 26 bones in the chest but sometimes there can be additional cervical ribs in humans. Cervical ribs occur naturally in other animals such as reptiles.

Hyoid bone (1)

Sternum (1 or 3)

Ribs (24, in 12 pairs)

Cervical ribs are extra ribs that occur in some humans.

Head

There are 22 bones in the skull. Including the bones of the middle ear, the head contains 28 bones.

Cranial bones (8)

Occipital bone

Parietal bones (2)

Frontal bone

Temporal bones (2)

Sphenoid bone (sometimes counted as facial)

Ethmoid bone (sometimes counted as facial)

Facial bones (14)

Nasal bones (2)

Maxillae (upper jaw) (2)

Lacrimal bone (2)

Zygomatic bone (cheek bones) (2)

Palatine bone (2)

Inferior nasal concha (2)

Vomer (1)

Mandible (1)

Middle ears (6 bones in total, 3 on each side)

Malleus (2)

Incus (2)

Stapes (2)

Arm

There are a total of 64 bones in the arm.

Upper arm bones (6 bones in total; 3 on each side)

Humerus (2)

Pectoral girdle (shoulder)

Scapula (2)

Clavicles (2)

Lower arm bones (4 bones in total, 2 on each side)

Ulna (2)

Radius (2)

Hand (54 bones in total; 27 in each hand)

Carpals

Scaphoid bone (2)

Lunate bone (2)

Triquetral bone (2)

Pisiform bone (2)

Trapezium (2)

Trapezoid bone (2)

Capitate bone (2)

Hamate bone (2)

Metacarpals (10 bones in total; 5 on each side)

Phalanges of the hand

Proximal phalanges (10 bones in total; 5 on each side)

Intermediate phalanges (8 bones in total; 4 on each side)

Distal phalanges (10 bones in total; 5 on each side)

Pelvis (pelvic girdle)

The pelvis (or hip bone) is made up of three regions that have fused to form two coxal bones. They are: ilium, ischium, and pubis

The sacrum and the coccyx attach to the two hip bones to form the pelvis, but are more important to the spinal column, where they are counted.

Leg

There are a total of 60 bones in the legs.

Femur (2 bones)

Patella or kneecap (2 bones)

Tibia (2 bones)

Fibula (2 bones)

Foot (52 bones in total, 26 per foot)

Tarsus/Tarsals

Calcaneus or heel bone (2 bones)

Talus (2 bones)

Navicular bone (2 bones)

Medial cuneiform bone (2 bones)

Intermediate cuneiform bone (2 bones)

Lateral cuneiform bone (2 bones)

Cuboid bone (2 bones)

Metatarsals (10 bones)

Phalanges of the foot

Proximal phalanges (10 bones)

Intermediate phalanges ( 8 bones)

Distal phalanges ( 10 bones)

See also

List of skeletal muscles of the human body

List of nerves of the human body

Circulatory system

Blood vessel.

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