Full of history and metaphorical stories
Anatomy lecture

This book explains the anatomy of the human body with friendly explanations and illustrations.
In Chapter 1, we explain the concept of anatomy and then dissect our body step by step, starting with the back, arms, chest, stomach, legs, and head.
Human body illustrations are placed in appropriate places to help you understand.
This book contains the parts that the author, who teaches anatomy, thought about while lecturing to make teaching easier for students.

There is also a field called artistic anatomy.
There is a proverb that says, 'Beauty is but skin-deep.'
I mean, appearance isn't important, but if you want to draw the human body realistically, you have to imagine the structures under the skin and draw them.
It is said that Leonardo da Vinci dissected more than 30 human bodies in his lifetime.
Michelangelo also explored human anatomy and eventually became able to draw any pose realistically from memory.
Art anatomy deals primarily with the skeleton and muscles, as it is intended to describe form and movement.
--- From "Chapter 1_Let's Start Anatomy"

The spine is the vertebrae located in the chest and is characterized by the ribs being attached to it.
The spine shares a common basic shape with all the vertebrae.
If you start with the spine, the rest will be easy to understand.
First, there is the vertebral body in the front, which is shaped like a round column.
Behind this is a ring of bones called the vertebral arch.
The space created by the vertebrae and rings is the vertebral foramen.

--- From "Chapter 2_etc."

There are many muscles attached to the shoulder blade.
These muscles support the shoulder blade above the rib cage and move the humerus along with the shoulder joint.
The shoulder blade has various projections and depressions where the muscles attach.
The lower angle, inner corner, and lateral corner can be checked by touch.
The superior angle and superior corner are hidden in the trapezius muscle and are difficult to see from the outside.
--- From "Chapter 3_Eight"

The skeleton defines where the chest begins and ends.
That skeleton is called the thoracic cage.
The thoracic cage is made up of three types of bones: 12 thoracic vertebrae, 12 pairs of ribs and costal cartilages, and the sternum.
These combine to form a cage-like shape.
There is a hole in the upper surface of the chest cage.
This is called the thoracic gate and is surrounded by the first rib, the sternum, and the first thoracic vertebra.
This is the border between the chest and neck.
“There is a large hole in the lower surface of the thorax called the inferior thoracic aperture, which is closed by a diaphragm.”
--- From "Chapter 5_Chest"

When viewed from the surface of the body, the abdomen is located between the chest and the legs.
That is, the upper border is the costal arch, xiphoid process, and thorax, and the lower border is from the iliac crest to the pubic symphysis.
From there, the lower part forms a bridge.
The abdominal cavity is wider than this.
Because the diaphragm is a convex dome shape, the stomach is inside the thoracic cage.
The abdominal cavity is continuous with the pelvic cavity below.
The demarcation line is located at that border.
It extends in an arched shape from the prominence of the upper sacrum to the pubic symphysis.
Above the dividing line, the iliac bones spread out like a large cup and support the internal organs of the abdomen.
Below the dividing line, the hip bones (hip bones, pubis, ischium), sacrum, and coccyx form the bony walls to create the pelvic cavity.
--- From "Chapter 6_Pear"

The fusion of the sacrum and the hip bone is called the pelvis.
Think of the open tulip shape of a pachinko machine.
The open petal portion is called the greater pelvis and becomes part of the abdominal wall, supporting the internal organs of the abdominal cavity.
The part where the pachinko ball goes in is called the lesser pelvis, and it is a tunnel surrounded by bones that forms the pelvic cavity.
The internal organs of the pelvis, such as the bladder, uterus, ovaries, and rectum, are located here.
The boundary between the greater and lesser pelvis is called the superior pelvic gate.
This place is called a bow line because it is shaped like a peak.
The lower part of the pelvis, the inferior pelvic gate, is closed by ligaments and muscles and supports the anus and external genitalia.
--- From “Chapter 7_Pelvis and Perineum”

As a bone at the beginning of the leg, the scapula has joints and muscle attachment points.
There are also gaps through which blood vessels and nerves pass, connecting the pelvis to the legs.
The first thing that stands out is the bowl-like depression on the outer surface of the sacrum.
This is the glenoid fossa of the hip joint.
This is where the head of the femur (femur) comes in.
This is also the intersection of the iliac, pubic, and ischial bones.
There is a cut-off portion below the articular surface, and the femoral head ligament passes through this area.
--- From "Chapter 8_Bridge"

The skull is made up of several parts combined.
The lower jaw moves at the temporomandibular joint, and the tongue bone moves at the temporomandibular joint, connected to ligaments and muscles.
The rest are all sutured shut so they don't move.
The bones are interlocked and connected in jagged curves like a jigsaw puzzle.
The skull, whether viewed as a whole or in sections, has a complex shape with holes, tubes, and protrusions.
Here, we will first broadly classify the skull into two types.
These are the skull and facial bones.
The brain is contained within the skull.
If the brain is a capsule that pops out of a claw machine, the rounded cap at the top is called the skull.
The facial bones lie in front of the skull and house various organs and sense organs.

--- From "Chapter 9_Head and Neck"