Muscular System and Lymphatic & Immune System Flashcards
The origin is the part of the muscle that is
Stationary
The insertion is the part that is
Movable
Which is antagonistic to biceps brachii?
Triceps Brachii
Which muscles consists of intercalated discs
Cardiac
In what way are cardiac muscles and skeletal similar
both have striations
Which is true about the structure of smooth muscle
- overlapping pattern of actin
and myosin similar to
skeletal muscle - consist of an irregular arrangement of actin and myosin
- do not consist of actin or myosin
consists of an irregular arrangement of actin and myosin
Function of smooth muscles
- contract relatively fast and in a controlled manner
- contract relatively slowly in a controlled manner
- contract relatively slowly and in an uncontrolled manner
- contract with autorhythmicity
contract relatively slowly in a controlled manner
Myofibrils are composed of individual
myofilaments
Muscles are held in place and covered by
fascia
The functional unit of a muscle is
sarcomere
Thin filaments within a muscle fiber are called
Actin
This substance will cross the NMJ to communicate w/ individual muscle fibers
Acetylcholine
The energy source for muscle contractions is
ATP
The A band in a myofibril is an area of
thick filaments
A sarcomere is defined as the section of fiber between
Z lines
Tendons connect
bones to muscles
CT that surrounds individual fibers
Endomysium
There are over (__) muscles in the body
600
The (___) is your buttocks
gluteus maximus
Muscles (___) when they contract
shorten
Monocytes move from systemic circulatory system into general CT, where they differentiate into what phagocytic cell type?
macrophages
Which of the ff cell types of the innate immune system does not perform phagocytosis?
- Macrophage
- Basophil
- Eosinophil
- Neutrophil
Basophil
Myelogenous leukemias are caused by the cancerous production of innate (non-specific) immune system cells: in which tissue is such production most likely to occur?
- Bone marrow
- Lymph node
- Thymus
- Spleen
Bone marrow
Humoral immunity is a type of adaptive immunity that results in the circulation of which of the ff throughout the blood?
- Antigen
- Antibodies
- Natural Killer Cells
- Macrophage
Antibodies
Which portion of an antibody provides antigen-binding sites?
Variable Portion
Which of the ff is not one of the three main main antigen-presenting cell (APCs)?
- Dendritic cells
- Natural Killer Cells
- B lymphocytes
- Macrophages
Natural Killer (NK) cells
Major histocompatibility complex (MHC) refers to a large group of genes that code for proteins that play an essential role in which of the FF?
- Phagocytosis by Macrophages
- Phagocytosis by Neutrophils
- Antigen presentation to B-lymphocytes
- Antigen presentation to T-lymphocytes
Antigen presentation to T-lymphocytes
In the developing fetus, prenatal hematopoiesis is not generally known to occur in which of the ff body parts?
- Appendix
- Lymph nodes
- Liver
- Spleen
Appendix
Recognition of self vs. non-self by the adaptive immune system in humans is accomplished in which of the following ways?
- Exposure of T-cells to body’s own antigen in the bursa of Fabricus
- Exposure of B-cells to body’s own antigen in the bursa of Fabricus
- Exposure of T-cells to body’s own antigen in the Thymus
- Exposure of B-cells to body’s own antigen in the Thymus
Exposure of T-cells to body’s own antigen in the Thymus
Central tolerance refers to which of the following processes?
- Destruction of lymphocytes that are specific for self-antigens
- Destruction of lymphocytes that are NOT specific for self-antigens
- Destruction of self-antigens that are specific for lymphocytes
- Production of self-antigens that are specific for lymphocytes
Destruction of lymphocytes that are specific for self-antigens
