Anatomical Terminology Flashcards Preview

Dentistry Biological Science > Anatomical Terminology > Flashcards

Flashcards in Anatomical Terminology Deck (26)
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1
Q

What is present in the anatomical position?

A
  1. Toes pointing forward
  2. Eyes directed towards the horizon
  3. Arms are by the side
  4. Palms of the hands facing forward
2
Q

What are the 3 main planes of the body?

A

Sagittal - Vertical lines dividing into left and right sides
Coronal - Vertical plane dividing the body into front and back parts
Transverse - Horizontal plane dividing the body into inferior and superior.

3
Q

What plane and joint name joins the two bones in the skull?

A

Sagittal suture

4
Q

Explain the meaning of the words anterior, posterior, superior, inferior, medical and lateral

A
Anterior - towards the front of the body
Posterior - towards the back of the body 
Superior - Towards the head
Inferior - Towards the soles of the feet
Medial - Towards the median plane 
Lateral - Away from the median plane
5
Q

What is the explanation for proximal and distal?

A
Proximal = towards the trunk
Distal = away from the trunk
6
Q

What does superficial mean?

A

Towards the skin

7
Q

What does internal and external mean?

A

Internal means inside and body cavity and external means outside a body cavity

8
Q

What does the skeleton consist of and which part of mineralised?

A

Bones and cartilage. Bone is mineralised.

9
Q

What cells is cartilage made up of?

A

Made up of chondroblasts which secretes ground substance and collagen.

10
Q

What are some identifiable elements of cartilage?

A
  • no neurovascular elements so gains nutrients via diffusion through ground substance
  • no blood supply
  • thin
11
Q

What are 5 main functions of bones?

A
  1. Support - bone provides a rigid framework
  2. Movement - Levers for muscles
  3. Protection - for organs
  4. Haemopioesis - blood stem cells found in bone marrow
  5. Storage - Calcium and phosphorus stored in the bone e.g. calcium needed for muscle contraction
12
Q

What are the names of the types of bones we have?

A
Flat bone (sternum)
Long bone (limbs)
Short bone (wrist)
Irregular bone (vertebra)
Sesamoid bone (knee)
13
Q

What are the cells which make up bones called?

A

Osteoblasts

14
Q

How do osteoblasts form bone?

A

Osteo cells become osteoblasts. Intracellular matrix becomes calcified.

15
Q

Explain the two ways bone forms

A

Endochondral = starts off with a small amount of cartilage and they grows until a boney collar forms. The middle can no longer receive nutrients so begins to calcify and more cartilage is formed at the end of the bone.

Ossification = long bones continue to grow and this continues up to puberty. Osteoblasts are laid down and secrete a matrix.

16
Q

What is special about inter membranous ossification?

A

There is no cartilage so bone is being formed around a structure e.g. the skull.

17
Q

What is fascia?

A

Sheet of connective tissue which separates muscles from other organs

18
Q

Where is the superficial fascia found?

A

Immediately below the dermis (skin).

19
Q

What does the superficial fascia contain?

A

Contains collagen and elastic fibres and a varying amount of fat

20
Q

What are the functions of fascia?

A
  1. Storage of both water and fat
  2. Protection against mechanical shock
  3. Conduction to transport nerves and blood vessels to the skin
  4. Thermal insulation as fat & water provide an effective barrier against rapid body heat loss.
21
Q

Where is deep fascia found and what is the structure like?

A

Found under superficial fascia. It forms a connective tissue covering for the deeper structures e.g muscles, vessels and nerves.
It contains little/no fat.

22
Q

What are the functions of the deep fascia?

A
  1. Conduction - blood and nerves transported through
  2. Muscle movement - Muscles wrapped in deep fascia able to slide over each other.
  3. Attachment for some muscles
  4. Capsules around organs and glands
23
Q

What are serous membranes composed of and what are the 3 in the body?

A
Composed of mesothelium and supported by loose connective tissue. 
The pleura (around lungs), the pericardium (around heart) and the peritoneum (around the abdomen).
24
Q

How are the serous membranes arranged?

A

Thin and double layered, small space between the two layers to minimise friction.

25
Q

Where are axillary and cervical lymph nodes found?

A

armpit, neck

26
Q

What do anchoring fibres of lymphatic capillaries do?

A

Attach the endothelial cells of lymphatic capillaries to the surrounding tissue to prevent the lumen from collapsing

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