layers of love
the order from top to bottom of the three main skin layers
epidermis, dermis, hypodermis
list three mechanisms of innate immunity
inflammation
natural killer cells
fever
antimicrobial proteins on skin
pH secretions on skin
what is the main function of lymph nodes
to filter blood
if you got a tattoo, which sensory receptor would feel the pain
free nerve ending
which skin cell also has a role in the nervous system
tactile epithelial cells
This layer is responsible for insulation, energy storage, and shock absorption
the hypodermis
neutrophils
the structure that is located right off of the large intestine and responsible for housing beneficial gut bacteria
the appendix
which gland secretes a substance made of proteins and fats that can result in body odor (hint located in your armpits)
apocrine glands
nail matrix
dendritic cells are most abundant in this layer of the skin
stratum spinosum
a baby getting vaccinated is an example of what type of acquired immunity? (natural or artificial and active or passive?)
artificially acquired active immunity
The _______ lymphoid organs like the ___________ are responsible for making and maturing lymphocytes
primary, thymus or red bone marrow
hair, nails, and the top most layer of skin are made of a protein called
keratin.
Antigen presenting cells (like macrophages) are required because ____ cells can't recognize the pathogens or antigens on their own
T cells
list two tracts (or systems) of the human body where MALT can be found
Respiratory tract
Reproductive tract
Gastrointestinal tract
the chemical barrier made by the skin that help fight bacteria is a result of what type of secretions
low pH
the ______ lymphoid organs, like the _________ are responsible for activating lymphocytes
secondary, spleen or lymph nodes
This layer of the skin (subsection) has several nerve endings, made of dense connective tissue, and highly vascular (tons of blood vessels)
papillary dermis (bonus 100 pts for knowing papillary)
define pathogen, antigen, and antibody
antigen - part of a pathogen that flags it as foreign (name tag)
antibody - protein produced by B-cells that attack the antigen to mark for destruction
which structure is responsible for monitoring bacterial growth in the intestines to prevent growth of bad bacteria there
Peyers patches
where are sebaceous glands NOT located at in our bodies, and why?
the lymphatic system is structurally most like which system?
and it is functionally most like which system?
structurally - cardiovascular
functionally - immune system