Anatomy Flashcards

1
Q

Which part of the body is anterior?

A

The front

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2
Q

Which part of the body is posterior?

A

The back

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3
Q

Which part of the body is superior?

A

Top

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4
Q

Which part of the body is inferior?

A

Bottom

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5
Q

Which part of the body is medial?

A

Towards the centre

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6
Q

Which part of the body is lateral

A

Towards the edges

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7
Q

Which part of the body is proximal?

A

Towards a point of attachment

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8
Q

Which part of the body is distal?

A

Away from a point of attachment

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9
Q

What is the coronal plane?

A

Divides the front and back

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10
Q

What is the sagittal plane?

A

Divides left and right

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11
Q

What is the transverse plane?

A

Divides top and bottom

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12
Q

What are the 4 types of tissues in the body?

A

Epithelial, connective, muscle, nervous

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13
Q

What is epithelial tissue and give an example of where it is found

A

Layers of cells that cover the exterior surface of the body, lines organs, internal cavities and passageways. They are involved in secretion, absorption, protection and transcellular transport. E.g skin, lining or organs, lining of blood vessels

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14
Q

What is connective tissue and give an example of where it is found

A

Tissue that forms a matric beneath epithelial tissue and connects and supports the framework of most organs. E.g bones, ligaments, tendons and adipose tissue (fat). They are involved in transport of fluid, nutrients, waste and chemical messengers

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15
Q

What are the 3 types of muscle tissues

A

Skeletal, smooth and cardiac

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16
Q

Describe skeletal muscle

A

Attached to bones and are involved in voluntary movements of the body. They are long striated fibres with several nuclei along the membranes.

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17
Q

What causes striation of skeletal muscles?

A

Regular alteration of actin and myosin along with structural proteins

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18
Q

Describe smooth muscle

A

Responsible for involuntary movement in the internal organs, airways and arteries. Each cell is spindle shaped with a single nucleus and no striations

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19
Q

Describe cardiac muscle

A

Forms the contractile walls of the heart. Cells are striated with a single centrally located nucleus and are connected to each other via intercalated discs

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20
Q

What is the 2 main functions of nervous tissue?

A

Integration and communication

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21
Q

What are the 2 types of nervous tissue?

A

Neurones and neuroglia

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22
Q

What are neurones?

A

Excitable, they propagate the information via electro-chemical impulses, e.g sensory neurones, motor neurones and interneurons

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23
Q

What are neuroglia?

A

They support neurones and modulate the information propagation. E.g astrocytes, microglia, enteric glia

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24
Q

What does the integumentary system include?

A

Skin, hair, nails, glands and the subcutaneous tissue below the skin

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25
What are the 4 main functions of the integumentary system
Protect the body from environmental factors Prevent dehydration Act as a sensory organ Synthesise vitamin D
26
What does the skeletal system consist of?
Bones, cartilage, ligaments and tendons
27
What are the 2 main functions of bone?
To provide a rigid frame. | To metabolise calcium
28
What makes the brain less vulnerable to injury?
The fused bones of cranium that surround the brain
29
What helps to protect the spinal chord?
The vertebrae
30
What helps to protect the heart and lungs of the thorax
The rib cage
31
Where does the formation of blood cells occur?
Red marrow of the bones
32
What is involved in the muscular system?
Muscle fibres that are able to contract and produce movement
33
What controls skeletal muscle?
The central nervous system
34
What controls smooth musucle?
The autonomic nervous system
35
What does the lymphatic system consist of?
Lymph (a fluid), vessels that transport lymph and organs that contain lymphoid tissue
36
What is lymph?
A fluid that is of a similar composition to blood plasma and is derived from the interstitial fluid
37
What is the role of lymph?
To return proteins and excess fluid to the bloodstream so that oedema is prevented and normal blood volume and pressure is maintained
38
Which direction do lymphatic vessels only flow in?
Away from tissues
39
Where are lymphatic capillaries found?
All regions of the body except the bone marrow, CNS and tissues that lack blood vessels
40
Where do lymphocytes originate?
Red bone marrow
41
What are lymphocytes carried in to reach the lymphatic organs?
The blood
42
What are lymphocytes?
A type of white blood cell, there are 2 types: B and T cells
43
What do lymphatic organs consist of?
Lymphocytes and other cells that are associated with connective tissue fibres
44
Describe the immune response from lymphatic organs
Lymphocytes within the lymphatic system are released by lymphatic organs to the site of the invasion of foreign substances
45
What is the spleen?
It filters blood by producing lymphocytes in response to pathogens and is located in the upper left abdominal cavity
46
What are macrophages?
A type of white blood cell that engulfs and digests foreign molecules
47
What is the thymus?
A soft organ that is located under the chest one and is the most active in children. It is gradually replaced by adipose tissue and is associated with the lymphatic system and endocrine system. It is responsible for the development of T-cells.
48
What does the respiratory system consist of? (6)
Nose, pharynx, larynx, trachea, bronchial tree and lungs
49
What stimulates the breathing process?
Nerve impulses
50
Generally, what happens within the respiratory system?
An exchange of gases between the lungs and blood, the blood transports the gases to and from the tissue cells enabling cells to use the O2
51
What does the cardiovascular system consist of?
The heart and a system of vessels
52
What is the function of the cardiovascular system?
To supply blood to the rest of the body and to maintain homeostasis (e.g temperature, defence against infection and transport of hormones)
53
What does the digestive system consist of?
The digestive tract and its accessory organs that process food into molecules
54
What is the digestive tract?
A long continuous tube that extends from the mouth to the anus
55
Give 3 accessory organs what are involved in digestion
Salivary glands, liver and pancreas
56
What are accessory organs?
Organs that assist the functionality of other organs
57
Where does the liver get blood from?
Oxygenated blood from the aorta | Blood rich with nutrients from the digestive tract
58
What are the main functions of the liver?
Secretion, synthesis of bile salts, filtering, excretion and carbohydrate, lipid and protein metabolism
59
What is the gallbladder?
A pear-shape sac attached to the surface of the liver that stores bile which is a fluid produced by the liver
60
What is the gallbladder involved in?
Digestion and absorption of fat
61
What is the pancreas?
A long, soft organ that lies along the posterior (back) abdominal wall and stomach. the endocrine portion secretes glucagon and insulin which help with digestion
62
What are the 4 components of the urinary system?
Kidneys, ureters, urinary bladder and urethra
63
What is the role of the kidneys?
To filter blood, remove and excrete the waste products into the urine
64
What do the ureters do?
Carry urine from the kidneys to the urinary bladder
65
What does the urethra do?
Carry urine from the bladder to the outside
66
What is the main function of the urinary system?
To maintain fluid homeostasis, regulate electrolytes in body fluids, maintain normal blood pH, pressure and control of red blood cell production
67
What are the 4 main areas that hormones function for?
Control of reproduction, growth and development of the body, regulation of electrolyte composition of bodily fluids, control of energy metabolism
68
What are the 2 endocrine glands in the brain?
``` Pineal gland (regulates sleep) Hypothalamus/ pituitary gland ```
69
What controls most of the secretion from endocrine glands?
The anterior pituitary
70
What do thyroid glands prodduce?
Thyroxine and calcitonin
71
What do parathyroid glands secrete?
Parathyroid hormone (PTH) which is involved in calcium metabolism
72
What do adrenal glands produce?
Adrenaline, noradrenaline, glucocorticoids
73
What does the thymus produce?
Thymosin which stimulates the maturation of lymphocytes
74
What are the 4 main functions of the reproductive system?
Produce egg and sperm cells Transport egg and sperm cells Development of the embryo Production of hormones
75
What does the male reproductive system consist of?
Testes, excretory ducts, seminal vesicles, prostate and the penis
76
What does the female reproductive system consist of?
Ovaries, fallopian tubes, uterus, vagina and external genital organs
77
What are the 2 parts to the nervous system?
Peripheral nervous system (PNS) | Central nervous system (CNS)
78
What are the 2 components to the motor division of the peripheral nervous system?
The somatic nervous system and the autonomic nervous system
79
What are the 2 divisions of the PNS?
Afferent (sensory) and efferent (motor)
80
What is the function of the somatic nervous system?
Supplies motor impulses to the skeletal muscles
81
What is the function of the autonomic nervous system?
Supplies motor impulses to cardiac and smooth muscles and to glands
82
What are the 2 subdivisions of the autonomic nervous system?
Sympathetic and parasympathetic
83
What makes up the CNS?
The brain and the spinal chord
84
What are meninges?
Connective tissue that protects the brain and the spinal chord
85
What is the role of the spinal cord?
Carries nerve signals between the brain and the rest of the body. Also serves as a reflex centre
86
What are the 4 sections to the brain?
Cerebrum, diencephalon, brain stem and cerebellum
87
Describe the cerebrum
It is divided into 2 cerebral hemispheres and are connected by a band of white fibres, corpus callosum. Each hemisphere is then divided into 4 lobes
88
Describe the diencephalon
The region of the brain on top of the brainstem and includes the thalamus, hypothalamus and epithalamus (pineal gland)
89
What is the role of the thalamus?
A relay station for sensory inputs
90
What system is the hypothalamus part of?
Endocrine system
91
What are the 3 regions of the brains stem?
Midbrain, pons and medulla oblongata
92
What is the midbrain associated with?
Vision, hearing, motor control, sleep and temperature regulation
93
What is the role of pons in the brain stem?
A bridge between other parts of the brain
94
Where is the medulla oblongata located
At the bottom of the brain and is connected to the spinal chord
95
What are cerebellar peduncles?
3 paired myelinated nerve fibres that form communication pathways between the cerebellum and other parts of the CNS.