Lymphatics

Question 1

what is a lymph vessel

Answer 1

A thin tube of endothelial cells that collects lymph from tissues in different parts of the body and returns it to the bloodstream.

Question 2

what is the function of lymphatics

Answer 2

• returns excess fluid to circulation
• defense against microorganisms and disease
• distributes immune cells e..g lymphocytes

Question 3

what is a lymph node

Answer 3

nodes filter substances that travel through the lymphatic fluid, and they contain lymphocytes (white blood cells) that help the body fight infection and disease.

Question 4

where are clusters of lymph nodes found

Answer 4

neck, axilla (underarm), chest, abomen and groin

Question 5

what is lymhedema/ oedema

Answer 5

lymph/fluid builds up in surrounding soft tissues in your arms and legs, causing swelling.

Question 6

what does the jugular lymph trunk drain

Answer 6

head and neck

Question 7

What does the subclavian lymph trunk drain

Answer 7

upper limb and superficial tissues of chest and abdominal wall

Question 8

what does the bronchomedialstinak lymph trunk drain

Answer 8

lungs, diaphragm, bronchi and trachea

Question 9

what lymph duct is only found on the left

Answer 9

thoracic trunk

Question 10

where does the thoracic lymph duct begin

Answer 10

confluence of the four main abdominal lymph trunks

Question 11

what is the pouch formed by the thoracic lymph duct called

Answer 11

cisterna chyli

Question 12

how many lymph nodes are in the head and neck

Answer 12

60-70

Question 13

what is the cause of swollen lymph nodes

Answer 13

ear, nose, mouth, throat infection or allergy
immune disoredr like lupus

Question 14

what do the superficial lymph nodes drain

Answer 14

scalp, ear, face and superficial cervical tissues

Question 15

what does the the occipital lymph node drain

Answer 15

occipital area of scalp

Question 16

what does the post-auricular lymph node drain

Answer 16

posterior auricular surface, external auditory canal, and adjacent scalp.

Question 17

what does the superficial cervical lymph node drain

Answer 17

drains superficial surfaces of the neck.

Question 18

what does the Superficial parotid lymph nodes drain

Answer 18

frontal and temporal skin, eyelids, conjunctivae, auricles, external acoustic meatus, tympanum, nasal cavities, root of nose, nasopharynx and eustachian tube

Question 19

what does the facial lymph node drain

Answer 19

mucous membranes of nose and cheek

Question 20

what does the submental lymph node drain

Answer 20

the skin of the mantak region/chin, portion of tongue and floor of mouth

Question 21

what does the submandibular node drain

Answer 21

the lower nasal cavity, both the hard and soft palates, and both maxillary and mandibular alveolar ridges

Question 22

where is the superior deep lateral cervical lymph node

Answer 22

the junction of posterior belly of digastric and internal jugular vein

Question 23

where is the inferior deep lateral cervical lymph node

Answer 23

junction of the intermdiate tendon of omohyoid and internal jugualr vein

Question 24

name the lymphoid organs

Answer 24

thymus, lymph nodes and spleen

Question 25

what are the primary lymphoid tissues

Answer 25

bone marrow and thymus

Question 26

name the secondary lymphoid tissues

Answer 26

lymph nodes, spleen, tonsils and peyer’s patch