In Parkinson’s disease, dopaminergic input from the _______ decreases.

If a researcher were to stimulate dopamine releasing neurons that project solely to the direct pathway, which of the following would occur? 

The deep excitatory loop in the cerebellum:

LTD is a critical part of motor learning and the three key cerebellum elements involved are Purkinje cells, climbing fibers (CF) and parallel fibers (PF). See attached figure. Which one of the following statements is true regarding LTD in this local microcircuit?

Exogenous electrical stimulation of individual neurons in the motor cortex of a healthy macaque monkey could lead to the following:

Related to the attached images from two different patients, what substance was taken in high doses that led to cell death in image shown on the right?

Match the following cellular and chemical agents of inflammation to the correct description:   selectins                       class of small proteins produced by WBCs; have autocrine,  paracrine, and endocrine roles in cellular communication heparin                                produced by basophils and mast cells, stimulates vasodilation and capillary permeability colony-stimulating factor       promotes cell death by apoptosis; slow tumor growth by damaging their vessels platelets    plasma clotting protein; activated forms sticky mesh, sequesters pathogens forms temporary scaffold for tissue rebuilding cytokines               hormones that raise WBC count by leukopoiesis fibrinogen                      eicosanoid secreted by basophils and mast cells activate and attracts neutrophils and eosinophils   histamine           polysaccharide secreted by basophils and mast cells inhibits tissue fluid coagulation promoting free mobility of WBCs leukotrienes                       rebuild damaged tissue by releasing collagen fibers and ground substance tumor necrosis factor        cell-adhesion molecules of endothelial cells, adhere to WBCs, promoting margination and diapedesis fibroblasts                            secrete clotting factors and growth factors  aid in preventing hemorrhage

Match the following cells to their correct description: (Multiple answers possible)   “respiratory burst”; bactericidal chemicals hydrogen peroxide (H2O2) and hypochlorite (HClO)                        Eosinophils      secretes chemicals to attract neutrophils and eosinophils                                                                                       T cells concentrated in mucous membrane, standing guard  against  parasites, and allergens                                       Neutrophils                          plays roles in specific defense plays roles in nonspecific resistance                                                                                                                         Basophils                                                                                                                                                           

Which of the following glial cells produce/s myelin sheath?

Ions move across a membrane due to: